| Layton Meacham | P | 2013-2015 | The Citadel |
| Chad Mead | P | 1996-1999 | Mississippi, Oklahoma |
| John Mead | OF | 2017-2020 | Wagner, Southeastern CC, Franklin Pierce University |
| Mike Mead | P | 2005-2007 | Charleston Southern, Seminole Florida |
| Ty Mead | IF | 2020-2020 | Utah Valley U |
| Hunter Meade | IF | 2020-2020 | Army |
| Josh Meade | 1B | 2013-2013 | SE Missouri State, John A. Logan College |
| Mat Meade | C | 2000-2003 | Belmont |
| Matt Meade | P | 2004-2006 | Davidson College |
| Skylar Meade | P | 2003-2007 | Louisville |
| Stephen Meade | OF | 2011-2012 | Santa Clara |
| Tommy Meade | P-1B | 2006-2010 | Central Ct State |
| Darrin Meaders | OF | 2009-2013 | Chicago State, NC A&T State |
| Ben Meador | P | 2004-2007 | Belmont, Tennessee-Martin |
| Chris Meador | IF | 2016-2016 | Virginia Tech |
| Jacob Meador | P | 2020-2020 | Texas Christian |
| Joe Meador | OF | 2003-2006 | Va. Commonwealth |
| Andrew Meadows | OF | 2019-2020 | Alcorn State |
| Aubrey Meadows | P | 2009-2013 | UNC Charlotte, North Carolina at Pembroke |
| Brad Meadows | P | 2001-2002 | Tennessee-Martin |
| Carson Meadows | P | 2014-2014 | Army |
| Chris Meadows | P | 2001-2004 | Marshall |
| Dillon Meadows | P | 2017-2020 | Texas Christian, Weatherford College, West Virginia |
| J.B. Meadows | C | 2004-2004 | La Salle |
| Jackson Meadows | IF | 2017-2020 | UNC Wilmington |
| Jerry Meadows | P | 1965-1967 | West Virginia |
| Mason Meadows | C | 2018-2020 | Georgia |
| Matt Meadows | OF | 2012-2012 | Austin Peay |
| John Meadus | P | 2006-2009 | Fairleigh Dickinson |
| Brian Meagher | IF | 2007-2010 | La Salle |
| Josh Meagher | C-1B | 2005-2005 | Cal State Northridge, Cuesta College, Chico State |
| T.F. Meagher | IF | 2000-2003 | Illinois |
| David Meals | P | 2009-2010 | UC Santa Barbara, West Valley College |
| Owen Meaney | P | 2019-2020 | Texas |
| Tom Meaney | C-OF | 2006-2009 | UMD-Baltimore Cty |
| Trevor Meaney | SS | 2019-2019 | Savannah State |
| Josh Means | P-OF | 2008-2010 | East Tennessee State |
| Mike Means | P | 2003-2003 | Bradley |
| Seth Means | OF | 2011-2012 | North Dakota, Dodge City CC |
| John Meany | C | 2020-2020 | Wake Forest |
| Marshall Mears | P | 2007-2010 | Middle Tenn State |
| Scott Mears | P | 2000-2003 | Air Force |
| Mike Mecca | OF | 2014-2014 | Villanova |
| Kade Mechals | P | 2017-2020 | Grand Canyon, Skagit Valley College, Western Oregon |
| Derek Mechling | C | 2004-2008 | Duquesne |
| Wade Meckler | IF | 2019-2019 | Oregon State |
| Casey Medairy | P | 2008-2011 | UMD-Baltimore Cty |
| Zack Meddings | IF | 2020-2020 | Nevada |
| Joe Medeiros | C | 2009-2010 | UC Davis, Cal State Stanislaus |
| Nick Medeiros | P | 2013-2016 | Santa Clara |
| Robert Medeiros | OF | 1995-1997 | Hawaii |
| Randy Medellin | IF | 2013-2015 | Cal State Bakersfield, Bakersfield College |
| John Medich | P | 2017-2020 | Georgia Tech, Rhodes College |
| Brad Medici | C | 2009-2010 | Canisius College |
| Jonathan Medici | OF | 2003-2005 | Niagara, UCLA |
| Mike Medici | C | 2004-2006 | Niagara |
| Alex Medin | OF | 2013-2015 | Grand Canyon, Phoenix College |
| Carlos Medina | OF | 2005-2006 | Lehigh |
| Chance Medina | IF | 2017-2020 | Incarnate Word, Odessa |
| Ernie Medina | P | 2008-2009 | Cal State San Bernardino |
| Humberto Medina | P | 2014-2016 | Arkansas-Pine Bluff, Barstow College |
| Jesus Medina | IF-P | 2013-2016 | Sacred Heart |
| Jordan Medina | C-1B | 2019-2020 | Northern Colorado, Colorado Christian College |
| Kane Medina | IF | 2019-2020 | Massachusetts |
| Lano Medina | IF | 2005-2005 | Liberty |
| Luis Medina | 1B | 2017-2019 | Tampa, Central Florida CC |
| Michael Medina | P | 2013-2013 | Prairie View A&M, Paris Junior College |
| Michael Medina | OF | 2013-2014 | New Mexico State, Compton CC |
| Miguel Medina | IF | 2020-2020 | Grambling State |
| Tino Medina | P | 2003-2003 | West Virginia, Potomac State College of WVU |
| Vincente Medina | OF | 2005-2005 | Fairleigh Dickinson |
| Yariel Medina | IF | 2014-2015 | Grambling State |
| Hunter Medine | P | 2014-2017 | New Orleans |
| Tyler Meditz | OF | 2014-2017 | Santa Clara |
| Jeff Medley | C-IF | 2009-2010 | USC-Upstate |
| Brett Medlin | OF | 2008-2009 | Texas Christian |
| Grimes Medlin | P | 2009-2009 | Young Harris College, South Carolina |
| Justin Medlin | P-1B | 2018-2020 | Middle Tenn State, Itawamba CC |
| Brendan Medoro | P | 2019-2020 | Fairleigh Dickinson |
| Adam Medrano | P | 2017-2020 | Fresno State, Azusa Pacific |
| AJ Medrano | IF | 2020-2020 | Wagner |
| Nick Medrano | OF | 2000-2003 | California |
| Anthony Meduri | P | 2016-2019 | Binghamton |
| Matt Meeder | IF | 2014-2017 | Mercer |
| Cameron Meehan | OF | 2018-2020 | Rollins |
| Keefer Meehan | P | 2018-2018 | Loyola Marymount |
| Pat Meehan | IF | 2016-2018 | Dayton |
| Ryan Meehan | C | 2007-2010 | Illinois-Chicago |
| Sean Meehan | OF-P | 2008-2010 | Washington |
| Taylor Meehan | P | 2005-2009 | Harvard |
| Jared Meek | C | 2002-2002 | Southern Utah |
| Jered Meek | IF | 2013-2014 | New Mexico |
| Rylan Meek | IF | 2018-2020 | Central Arkansas, Angelina College, Alvin CC |
| Stetson Meek | C | 2015-2016 | Abilene Christian, Vernon College |
| Jack Meeker | C | 2013-2014 | La Salle |
| Josh Meeker | OF-IF | 2007-2008 | Austin Peay, Olympic College |
| Larry Meekins | P | 1974-1975 | Louisburg College, Clemson |
| Cameron Meeks | P | 2020-2020 | McNeese State |
| Chris Meeks | OF | 2002-2003 | Texas Christian, Eastfield College |
| Joe Meeks | H | 1999-2000 | Southern Illinois |
| Kaleb Meeks | P | 2018-2019 | Northern Kentucky |
| Matt Meeks | OF | 2001-2002 | Texas State, Northeast Texas CC |
| Thor Meeks | C-IF | 2009-2012 | Marshall |
| Jett Meenach | 1B | 2014-2017 | Navy |
| Pat Meenan | SS-2B | 2016-2016 | Rider |
| Josh Meents | C-P | 2005-2008 | Air Force |
| Ben Meer | P-OF | 2011-2013 | Lafayette College |
| Rob Meerman | IF | 2012-2012 | Hartford |
| Andy Mees | UT | 2008-2009 | Northern Colorado, Central Arizona College |
| Luke Meeteer | OF | 2012-2016 | UW Milwaukee |
| Ty Megahee | SS | 2004-2005 | Mercer |
| Andy Megee | 3B-P | 2008-2011 | Yale |
| Matt Megee | H | 2004-2004 | Marshall |
| Andrew Meggs | IF | 2019-2020 | Creighton |
| Mitch Megias | P | 2019-2020 | Notre Dame |
| Ross Mehalko | OF | 2000-2002 | Fairfield |
| Scott Mehan | OF | 2018-2018 | Arizona State |
| Zach Mehelich | P | 2017-2020 | Western Michigan |
| Ben Mehl | P | 2003-2003 | Hartford |
| Brady Mehl | --- | 2020-2020 | Akron |
| Kyle Mehl | IF | 2015-2018 | Campbell, Brunswick CC |
| Clayton Mehlbauer | SS | 2018-2020 | Bellarmine |
| Greg Mehlhaff | IF | 2019-2019 | Pepperdine |
| Tyson Mehlhoff | OF-1B | 2009-2009 | UNLV, Southern Nevada |
| Nick Mehlin | IF | 2017-2017 | Saint Louis |
| Dane Mehring | P | 2014-2015 | Chicago State, Ellsworth CC |
| Shawn Mehring | OF | 2009-2012 | Lipscomb |
| Cooper Mehrmann | P | 2019-2019 | Holy Cross |
| Chase Meidroth | IF | 2020-2020 | San Diego |
| Craig Meier | P | 2008-2009 | UW Milwaukee, Madison Area Technical College |
| Jason Meier | OF | 1996-1997 | Ball State |
| Justin Meier | P | 2003-2005 | LSU |
| Justin Meier | P | 2011-2014 | Bucknell |
| Keith Meier | P | 2017-2020 | New Orleans, Baton Rouge CC |
| Matthew Meier | 2B-SS | 1994-1994 | Xavier |
| Max Meier | P | 2020-2020 | Stanford |
| Taylor Meier | P | 2004-2006 | Central Florida |
| Willie Meier | P | 2007-2007 | Cornell |
| Ethan Meiggs | P | 2009-2011 | Campbell |
| Taylor Meilleur | C | 2017-2018 | St. Mary's (CA) |
| Matt Meinberg | P | 2004-2007 | Toledo |
| Aron Meindl | P | 2008-2009 | St. Bonaventure |
| Jim Meindl | P | 2011-2014 | Siena College |
| Andrew Meiners | C | 2016-2016 | New Jersey Tech |
| Nathan Meiners | C | 2003-2003 | Alabama |
| Matt Meingasner | OF | 2006-2007 | Vanderbilt, Broward College |
| Mike Meinhart | IF | 2001-2002 | Toledo, Central Michigan |
| Stuart Meinhart | IF | 2006-2010 | Tennessee Tech, Middle Tenn State |
| Chris Meininger | 2B-SS | 2008-2009 | Columbia |
| Mathias Meinte | P-IF | 2010-2011 | Texas Southern |
| Michael Meintel | P | 2008-2011 | Wright State |
| Justin Meis | P | 2019-2020 | Eastern Michigan |
| Brian Meischner | IF | 2003-2004 | Bradley, Illinois Central College |
| Jeff Meise | C | 2008-2008 | Brigham Young |
| Logan Meisler | 2B | 2007-2010 | Bowling Green State |
| Mark Meisner | UT | 2012-2016 | Niagara |
| Adam Meissner | P | 2006-2006 | Western Michigan, Kalamazoo Valley CC |
| Brendan Meissner | P | 2016-2017 | Illinois, UW Oshkosh |
| Andrew Meister | P | 2009-2010 | Saint Louis |
| Rory Meister | P | 2005-2008 | Ohio State |
| Scott Meitzler | C | 2019-2020 | NC A&T State |
| Alberto Mejia | 3B-OF | 2011-2015 | Saint Peter's, the Cumberlands |
| Benny Mejia | P | 2009-2012 | Seton Hall |
| Jeff Mejia | OF | 2018-2019 | Massachusetts-Lowell, Maine |
| Jeremiah Mejia | OF | 2007-2010 | Oral Roberts, Riverside CC |
| Joey Mejia | C | 2016-2019 | Pacific |
| Junior Mejia | OF | 2004-2008 | Binghamton, Tampa |
| Louis Mejia | IF | 2013-2016 | Pacific |
| Marco Mejia | P | 2009-2013 | Saint Louis |
| Ryan Mejia | OF | 2017-2017 | Florida State, South Florida |
| Shane Mejia | P | 2019-2020 | Nicholls State |
| Chris Mejias | P | 2016-2016 | Georgia State |
| Ed Mejias | P | 2011-2014 | Saint Peter's |
| Hector Mejias | IF | 2011-2013 | Grambling State, Wabash Valley College |
| Tony Mejias | OF | 2017-2017 | North Carolina Central |
| Patrick Melampy | P | 2020-2020 | Army |
| Barry Melancon | P | 2002-2003 | New Orleans, Bossier Parish CC |
| Mike Melancon | P | 2002-2003 | Lamar, Angelina College |
| Eric Melbostad | P | 2013-2016 | Arizona State |
| Shane Melbrod | IF | 2017-2018 | Xavier, Heartland CC, Missouri-St. Louis |
| Jeff Melby | IF | 2010-2013 | Portland |
| Kevin Melcher | P | 2001-2003 | Kansas State, Texas Christian |
| Sam Melchior | P | 2014-2014 | Western Kentucky |
| Steven Melchiore | P | 2013-2013 | Rowan |
| Nicholas Melchiorre | P | 2008-2011 | Fairleigh Dickinson |
| Gary Mele | C | 2011-2012 | Jackson State |
| Devin Melecio | OF | 2008-2008 | Illinois-Chicago, North Park |
| Alvin Melendez | IF-OF | 2017-2020 | Fordham |
| Anthony Melendez | IF | 2008-2008 | Iona College, Eastern Nazarene College, Baruch College |
| Brandon Melendez | IF | 2017-2019 | NC A&T State, Chattanooga State Technical CC |
| Bryan Melendez | P | 2016-2019 | Southern, Bethune-Cookman |
| Jesus Melendez | P | 2005-2006 | Coppin State College, Montgomery College-Germantown |
| Josh Melendez | OF | 2012-2013 | New Mexico, Gateway CC |
| Matt Melendez | P | 2007-2007 | New Mexico State, El Paso CC |
| Willie Melendez | IF | 2000-2003 | Penn State |
| Nick Melendres | P | 2008-2009 | Florida Atlantic, Frank Phillips College |
| Andrez Melendrez | IF | 2020-2020 | UC Riverside |
| Eric Meleney | P | 2011-2011 | Marshall |
| Johnny Melero | P | 2011-2014 | San Jose State |
| Mike Meleski | P | 2013-2014 | Binghamton, Broome CC |
| David Melfi | C | 2020-2020 | Wagner |
| Danny Melgarejo | P | 2015-2017 | Bethune-Cookman |
| Markus Melgosa | UT | 2009-2013 | St. Mary's (CA) |
| Jeff Melillo | C | 2010-2013 | Rutgers |
| Matt Melillo | P | 2004-2007 | Duquesne |
| Mike Melillo | C | 2007-2010 | Elon |
| Nick Melillo | OF | 2019-2020 | Siena College |
| Nick Melino | OF | 2009-2011 | Nevada |
| Joel Melinsky | 1B | 2003-2004 | Cleveland State |
| Michael Melissinos | P | 2004-2004 | Seton Hall |
| Grant Melker | OF | 2012-2015 | San Diego |
| Joe Mellano | C | 2007-2010 | Brown |
| Jarrod Melle | P | 2019-2020 | Connecticut, Kellogg CC, Central Michigan |
| Charlie Mellies | P | 2004-2008 | Wake Forest |
| Dan Mellies | C | 2006-2006 | Maryland, Western Carolina |
| Jared Melliff | IF | 2013-2015 | Evansville, Vincennes |
| John Mellilo | P | 2002-2002 | Quinnipiac |
| Jacob Mellin | P | 2013-2016 | Hartford |
| Kyle Melling | P | 2007-2010 | Southern Utah |
| Brad Mellinger | 2B-SS | 2003-2003 | Oregon State, Linfield College |
| Dan Mello | IF | 2009-2010 | Bryant University |
| Mason Mellott | P | 2018-2020 | Penn State |
| Brandon Mells | OF | 2002-2002 | Southern Illinois |
| Danny Melnick | C-1B | 2020-2020 | Quinnipiac |
| Andrew Melnyk | P | 2019-2020 | Longwood |
| Jake Meloche | P | 2014-2014 | Cal State Fullerton, Cal State San Bernardino |
| John Melody | C | 2014-2017 | Dartmouth |
| Jason Meloy | OF | 2002-2005 | Army |
| Chris Melrath | OF-P | 2015-2018 | Maryland-Eastern Shore |
| Andrew Melton | IF | 2010-2013 | South Dakota State |
| Derek Melton | 1B | 2008-2008 | Evansville, Wabash Valley College |
| Jacob Melton | OF | 2019-2020 | Oregon State |
| JD Melton | P | 2006-2009 | Wofford, Navy |
| Mitch Melton | C | 2008-2010 | Navy |
| Troy Melton | P | 2019-2020 | San Diego State |
| Zach Melton | P | 2017-2018 | South Alabama |
| Shane Meltz | P | 2015-2017 | Nebraska at Omaha, Mid-Plains CC-McCook Campus, Colorado Northwestern CC |
| Dan Melvin | IF | 2004-2007 | Maryland |
| Joshua Melvin | 1B | 2003-2003 | Norfolk State |
| Luke Melymick | P | 2012-2012 | Alabama State |
| Kevin Mementowski | P | 2006-2009 | Ohio |
| Matt Memoli | IF | 2003-2007 | Central Ct State |
| Andy Mena | IF | 2007-2011 | Army, Lamar |
| Jesse Mena | P | 2000-2002 | San Francisco |
| Luis Mena | C | 2010-2011 | Maryland-Eastern Shore |
| Kyle Menaker | P | 2020-2020 | SUNY - Albany |
| Mark Menaker | IF | 2010-2012 | Illinois State |
| Kennon Menard | IF | 2014-2016 | SE Louisiana |
| Matt Menard | C | 2013-2017 | Baylor |
| Mike Menard | P | 2005-2005 | Massachusetts |
| Todd Menchaca | OF | 2008-2010 | Delaware |
| Jose Mencia | P | 2020-2020 | Delaware State |
| George Mendazona | IF | 2017-2020 | Oregon State, Lubbock Christian University |
| Justin Mendek | P | 2002-2006 | Temple |
| Marc Mendel | P | 2020-2020 | Kansas |
| Benino Mendella | OF | 2020-2020 | Gardner-Webb |
| Andrew Mendenhall | OF | 2010-2012 | Oregon, Lewis-Clark State College |
| Dutch Mendenhall | C | 2001-2002 | Iowa, Kirkwood CC |
| Kyle Mendenhall | IF | 2015-2018 | Oklahoma |
| Matt Mendenhall | IF | 2013-2014 | Washington State |
| Reno Mendenhall | 3B | 2004-2006 | Utah Valley U |
| Scott Mendenhall | P | 2005-2005 | The Citadel |
| Jacob Menders | P | 2017-2020 | Va Military Inst., Shippensburg Pennsylvania, Chattahoochee Val |
| Alec Mendez | P | 2019-2020 | Bethune-Cookman |
| Alex Mendez | H | 2010-2013 | South Florida |
| Andrew Mendez | C | 2008-2009 | Savannah State |
| Christian Mendez | UT | 2018-2020 | Prairie View A&M, Frank Phillips College |
| Daniel Mendez | IF | 2019-2020 | St. Mary's (CA), Chaffey College |
| JC Mendez | OF-P | 2019-2020 | Pittsburgh, Central Florida CC |
| Joey Mendez | C | 2017-2018 | Longwood |
| Joseph Mendez | OF | 2018-2018 | Fresno State, College of the Canyons |
| Marcus Mendez | IF | 2017-2020 | Stephen F. Austin, Pima CC |
| Morgan Mendez | P | 2019-2020 | Florida A&M, Palm Beach State College |
| Peter Mendez | P | 2008-2009 | Cal State Northridge |
| Randal Mendez | IF | 2014-2017 | Coppin State College, Mercy College |
| Troy Mendez | OF | 2006-2009 | East Tennessee State |
| Matthew Mendibles | IF | 2017-2020 | San Francisco, Yavapai College |
| Eddy Mendiola | 3B-1B | 2006-2009 | Notre Dame |
| Bryce Mendonca | IF | 2008-2009 | Pepperdine, Chabot College |
| Chris Mendoza | P | 2010-2013 | Santa Clara |
| Curt Mendoza | OF | 2003-2006 | San Diego State |
| Dylan Mendoza | P | 2010-2011 | Texas A&M, Texas State |
| Grant Mendoza | P | 2017-2020 | Alabama A&M, Chabot College |
| Johnny Mendoza | C | 2017-2020 | San Jose State |
| Jose Mendoza | P | 2006-2007 | Maine, Saint Thomas |
| Juan Mendoza | H | 2007-2007 | Southern |
| Matthew Mendoza | P | 2016-2018 | Texas-Pan American |
| Mike Mendoza | P | 2001-2003 | Hartford |
| Reyfrey Mendoza | P-OF | 2020-2020 | Houston |
| Tito Mendoza | IF | 2011-2013 | Florida Gulf Coast, Cowley College, Central Florida CC |
| Tyler Mendoza | IF | 2017-2020 | Texas A&M-Corpus Christi, Paris Junior College, Angelo State |
| Vicente Mendoza | OF-P | 2020-2020 | Iona College |
| Jake Mendrin | 1B | 2003-2004 | Cal State Fullerton |
| Bryan Menduke | P | 2011-2012 | Bryant University |
| Joseph Menefee | P | 2019-2020 | Texas A&M |
| Sam Menegat | P | 2017-2020 | Illinois-Chicago, Mt. Hood CC |
| Antonio Menendez | P | 2018-2020 | Wake Forest |
| Danny Menendez | IF | 2006-2009 | Maine |
| Gus Menendez | IF | 2004-2007 | South Alabama, Miami-Dade College, Miami |
| Juan Menendez | C | 2002-2003 | Jacksonville, St. Petersburg College |
| Lewis Menendez | UT | 2019-2020 | Columbia |
| TJ Menerey | C | 2007-2008 | Nicholls State |
| Jordan Menfee | P | 2016-2020 | Northern Kentucky, Southern Indiana |
| Robb Meng | 3B | 2007-2007 | Campbell, Monroe CC |
| Kris Mengle | P | 2007-2010 | George Mason |
| Sean Menickella | C | 2010-2013 | Iona College |
| Shawn Menke | 2B-SS | 2002-2003 | Texas-Arlington, Hutchinson CC |
| William Menke | 3B | 2002-2003 | Saint Joseph's |
| Nick Menken | OF | 2016-2020 | Virginia Tech, Iowa Western CC, Illinois |
| Shane Menn | 1B-C | 2003-2003 | Texas-San Antonio, Alvin CC |
| Frank Menna | 1B | 2003-2003 | Towson |
| Eric Mennen | P | 2002-2004 | Alabama |
| Sam Mennitt | IF-C | 2018-2020 | UNC Charlotte, Guilford College |
| Philip Menou | P-1B | 2010-2013 | Louisiana Tech, Southern Arkansas |
| Myles Mensah | IF | 2017-2020 | Hofstra |
| Vojtech Mensik | IF | 2019-2020 | NC State |
| Mathias Mentie | P | 2008-2008 | Texas Southern |
| Ryan Mentkowski | P | 2001-2003 | Iowa |
| Chris Mentrasti | IF | 2006-2009 | Hofstra |
| Greg Mentrek | P | 2004-2007 | Bowling Green State |
| Sean Mentzinger | P | 2005-2005 | Monmouth |
| Jon Meola | IF | 2016-2020 | Virginia, Seminole Florida, Stetson |
| Alberton Meran | OF | 2002-2003 | Bethune-Cookman, South Mountain CC |
| Joe Mercadante | C | 2002-2003 | Florida, Delgado CC, Coastal Ala-Brewton |
| Joe Mercadante | OF-P | 2016-2019 | Long Island-Brooklyn |
| Mike Mercadante | P | 2004-2004 | Central Florida, Tallahassee CC |
| Tristan Mercadel | OF | 2015-2018 | Long Beach State |
| Alexis Mercado | C | 2012-2014 | Cal State Northridge |
| Chad Mercado | C | 2005-2007 | Bethune-Cookman, Pratt CC, SE Missouri State |
| Eli Mercado | SS-2B | 2017-2019 | Longwood, Olive-Harvey College |
| Eric Mercado | 2B-SS | 2018-2018 | Saint Peter's |
| Joseph Mercado | P | 2015-2016 | St. Mary's (CA), Cypress College |
| Luke Mercado | 2B | 2001-2002 | Ark-Little Rock |
| Miguel Mercado | 1B | 2005-2006 | Texas State, Galveston College |
| Ruben Mercado | IF | 2018-2020 | San Jose State, Cuesta College |
| Steve Mercado | IF | 2014-2017 | UC Riverside, American River College |
| Hunter Mercado-Hood | OF | 2014-2017 | San Diego |
| Miguel Mercedes | C | 2005-2005 | Bethune-Cookman |
| Alex Mercer | P | 2013-2016 | Western Kentucky, Bellarmine |
| Blair Mercer | C | 2006-2006 | Florida A&M, Coastal Ala-Brewton |
| David Mercer | H | 2007-2007 | Coppin State College |
| Hunter Mercer | OF-IF | 2017-2020 | Troy |
| Jace Mercer | IF | 2017-2020 | Cincinnati |
| Jeff Mercer | P | 2005-2009 | Dayton, Wright State |
| Marvin Mercer | 1B | 2005-2006 | Grambling State, Dyersburg State CC |
| Matt Mercer | P | 2018-2020 | East Tennessee State |
| Proctor Mercer | P | 2019-2020 | Northern Kentucky |
| Scott Mercer | IF | 2013-2016 | Texas-Pan American, Cabrillo College |
| Will Mercer | P | 2020-2020 | Notre Dame |
| Anthony Merchan | P | 2014-2015 | New York Tech, Polytechnic University |
| Causton Merchant | OF | 2008-2008 | Alcorn State |
| David Merchant | P | 2005-2008 | Creighton |
| Brett Mercier | C-OF | 2018-2019 | Fairleigh Dickinson, Indian River CC |
| Camdon Mercier | IF | 2016-2019 | Maryville College, Olney Central College |
| Zach Merciez | P | 2012-2015 | Missouri State |
| Daniel Merck | IF | 2008-2011 | Georgia State, Gardner-Webb |
| Kasey Merck | P | 2011-2012 | Texas-Arlington |
| Dominic Mercurio | IF | 2015-2018 | Northern Kentucky |
| Frank Mercurio | IF | 2009-2010 | Pittsburgh, Mercer County CC |
| Joe Mercurio | C | 2007-2010 | Illinois, Maine |
| Joseph Mercurio | C | 2003-2005 | Wagner |
| Matt Mercurio | UT | 2018-2018 | Bryant University |
| Wes Mercurio | OF | 2009-2013 | Baylor |
| Mason Meredeth | IF-OF | 2009-2010 | Samford, Gulf Coast CC |
| Craig Meredith | IF | 2013-2014 | Oregon, American River College |
| Kier Meredith | OF | 2018-2020 | Clemson |
| Michael Meredith | SS | 2012-2013 | St. Bonaventure, Wallace State CC |
| Nolan Meredith | P-IF | 2019-2020 | UC Davis |
| Elian Merejo | C | 2017-2020 | Georgia State, Eastern FL ST |
| Justin Merendino | 2B | 2004-2005 | Louisiana-Lafayette, North Central Texas College |
| Brad Mergen | P | 2011-2012 | Cincinnati, Indian Hills CC-Centerville |
| Gary Merians | P | 2011-2011 | Florida State, Santa Fe CC |
| Dave Mericle | P | 2008-2008 | Saint Peter's |
| Troy Merida | C | 2016-2016 | Eastern Kentucky |
| Mike Meridieth | C | 2001-2002 | Toledo |
| Matt Merino | IF | 2015-2018 | Ark-Little Rock, Alvin CC, Cisco Junior College |
| Stephen Merino | 3B | 2008-2010 | Broward College, Saint Thomas, Tampa |
| Kyle Merkel | P | 2018-2020 | San Diego State, Yavapai College, Chicago State |
| Adrian Merkey | SS | 1998-1999 | Polk State, Tampa |
| Kyle Merkle | 1B | 2020-2020 | Presbyterian College |
| Rob Merkle | IF | 2006-2009 | Oakland, Garden City CC |
| Bill Merkler | C | 2006-2009 | Delaware |
| Daniel Merlano | C | 2017-2020 | Wright State, Sinclair CC |
| Devin Merone | OF | 2015-2019 | SUNY-Purchase, Westchester CC |
| Nick Merone | IF | 2019-2019 | Portland |
| Bo Merrell | SS | 2008-2008 | Texas State, Seward County CC |
| Chris Merrick | P | 2008-2008 | Saint Louis, Lindenwood University |
| Hite Merrifield | OF | 2020-2020 | Wake Forest |
| Bryan Merrigan | OF | 2000-2002 | Rider |
| Bubbs Merrill | IF | 2003-2004 | Nebraska, Texarkana College, Arkansas |
| Hunter Merrill | IF | 2014-2017 | Mars Hill College, Monroe CC |
| Jason Merrill | P-OF | 2002-2002 | Saint Joseph's |
| Josh Merrill | P | 2012-2015 | Ark-Little Rock, Neosho County CC., King College (Tenn.) |
| Sam Merrill | OF | 2008-2009 | McNeese State, Paris Junior College |
| Nick Merriman | C | 2005-2006 | Gonzaga, Treasure Valley CC |
| Adam Merritt | IF | 2005-2005 | Maryland-Eastern Shore |
| Alex Merritt | C-IF | 2014-2017 | North Florida |
| Benson Merritt | P | 2009-2009 | Canisius College |
| Brayden Merritt | OF | 2018-2020 | New Mexico, Grand Canyon |
| Griffin Merritt | IF | 2019-2020 | Cincinnati |
| JD Merritt | OF | 2003-2004 | Murray State |
| Jordan Merritt | P | 2016-2019 | The Citadel |
| Scott Merritt | P | 2009-2010 | Bryant University |
| Tanner Merritt | P | 2011-2012 | East Carolina |
| TJ Merritt | OF | 2004-2005 | San Diego, San Diego Mesa College |
| Taylor Merry | P | 2007-2008 | Lipscomb |
| Dawson Merryman | P | 2020-2020 | Texas |
| Josh Merryman | P | 2000-2003 | Arkansas |
| Patrick Merryweather | P | 2017-2018 | College of Charleston, Onondaga CC, Herkimer County CC, SUNY-Cortland |
| Joseph Mershon | IF | 2020-2020 | College of Charleston |
| Nick Mershon | IF | 2004-2006 | Furman, Florida Southern |
| Ben Mersky | OF | 2010-2010 | Fairleigh Dickinson |
| Stephen Merson | P | 2003-2003 | Towson |
| Drew Merten | C | 2013-2015 | Ark-Little Rock, Lamar CC |
| John Merten | P | 1965-1967 | Rider |
| Mitch Merten | P | 2011-2014 | UC Irvine |
| Chrystian Mervilus | IF | 2020-2020 | Grambling State |
| CJ Mervilus | IF | 2019-2019 | Grambling State |
| David Mervis | P | 2017-2020 | Va. Commonwealth, Catonsville CC, West Chester |
| Matt Mervis | IF-P | 2017-2020 | Duke |
| Ryan Merz | IF-P | 2004-2004 | Appalachian State |
| Todd Merz | P | 2004-2004 | Pacific, Vanguard Southern California |
| Anthony Mesa | OF | 2009-2010 | Florida Atlantic, Broward College |
| Frank Mesa | IF-P | 2003-2006 | Arizona State, Arizona Western College |
| Jesse Mesa | 2B-3B | 2010-2011 | College of Charleston, Central Florida CC |
| Zach Mesa | OF | 2019-2020 | Kansas State, Tarleton State |
| Dalton Mesaris | P | 2020-2020 | Western Kentucky |
| Patrick Mescher | 1B | 2011-2014 | Army |
| Mike Meschke | 1B | 2007-2010 | Florida State, North Florida CC, Alabama |
| Jimmy Messer | P | 2009-2012 | North Carolina |
| Garrett Messerly | IF-C | 2008-2009 | Southern Utah, Dixie State College |
| Ryan Messex | C | 2012-2015 | Western Kentucky |
| Parker Messick | P | 2020-2020 | Florida State |
| Josh Messier | SS | 2011-2012 | Massachusetts |
| Matt Messier | P | 2016-2019 | St. John's, Southern New Hampshire |
| Joe Messina | P | 2020-2020 | La Salle |
| Mark Messina | P | 2003-2003 | Binghamton, Monroe CC |
| Ross Messina | SS | 2017-2020 | Ball State, Cowley College, Seminole State College |
| Sam Messina | P | 2016-2019 | Army |
| Kyle Messineo | OF | 2004-2007 | Connecticut, Connecticut-Avery Point, Monmouth |
| Connor Messinger | IF | 2013-2016 | Nebraska at Omaha, Nebraska-Kearney |
| Justin Messinger | C | 2011-2011 | Morehead State |
| Nick Messinger | OF | 2006-2009 | Siena College |
| Skyler Messinger | SS | 2018-2020 | Kansas |
| Zach Messinger | P | 2019-2020 | Virginia |
| Connor Messman | C | 2014-2014 | Abilene Christian |
| Ryan Messmer | P | 2009-2010 | Youngstown State |
| Spenser Messmore | P | 2009-2012 | Cal State Bakersfield |
| Mike Mestdagh | P | 2012-2014 | Michigan State |
| Lane Mestepey | P | 2001-2005 | LSU |
| Ryan Meszaros | P | 2019-2019 | Princeton |
| Chris Metcalf | C | 2010-2010 | Georgia State |
| Connor Metcalf | P | 2014-2014 | Jacksonville State, Coastal Alabama-Monroeville |
| Nolan Metcalf | C-1B | 2018-2020 | Kansas |
| Tyler Metcalf | IF | 2008-2009 | Western Illinois, Barton County CC |
| Blake Metcalfe | IF | 2018-2019 | New Orleans, South Georgia College, Shorter |
| Connor Metelski | P | 2017-2020 | Massachusetts-Lowell |
| Garrett Methvin | P | 2010-2014 | Arkansas, LeTourneau University |
| Nathan Methvin | 1B | 2015-2017 | Western Kentucky, Tyler Junior College, Fort Scott CC |
| Takoda Metoxen | P | 2017-2020 | Memphis |
| Ryan Mets | P | 2015-2020 | Oregon State, Northwest Nazarene, Union U |
| Tristan Metten | IF | 2016-2018 | Texas A&M, San Jacinto |
| Zach Mettetal | IF | 2018-2018 | Memphis |
| Jayden Metz | P | 2020-2020 | Siena College |
| Ryan Metz | P | 2018-2020 | Virginia Tech |
| Scott Metz | P | 2000-2002 | Eastern Illinois |
| Drew Metzdorf | IF | 2018-2020 | Massachusetts, Plymouth State University |
| Chase Metzger | C | 2006-2006 | Iowa |
| Jack Metzger | P | 2020-2020 | Dartmouth |
| Mike Metzger | OF | 2005-2007 | UCLA, San Diego |
| Zach Metzger | C | 2013-2017 | Texas A&M-Corpus Christi, Cisco Junior College, St. Cloud State |
| Ben Metzinger | C | 2019-2020 | Louisville |
| Adam Metzler | OF | 2000-2003 | Ball State |
| Ryan Metzroth | OF | 2005-2009 | Richmond |
| Matt Meurer | P | 2012-2014 | Villanova |
| Ryan Meury | P | 2019-2020 | Columbia |
| Jay Meuse | 2B-SS | 2018-2019 | Tennessee Tech, Chattahoochee Val |
| Frank Mewborn | OF | 2012-2014 | Coppin State College |
| Aaron Meyer | IF | 2014-2017 | Missouri State |
| Adam Meyer | P | 2014-2018 | Arkansas, Texas-Arlington, Eastern Oklahoma State College |
| Alex Meyer | P | 2007-2011 | Georgetown |
| Alex Meyer | P | 2007-2007 | Northern Iowa |
| Blake Meyer | 2B | 2005-2006 | Eastern Illinois, John A. Logan College |
| Brian Meyer | OF | 2003-2006 | Ball State |
| Brodie Meyer | 2B | 2014-2015 | Butler |
| Cam Meyer | P-IF | 2018-2020 | Holy Cross |
| Clayton Meyer | P | 2004-2005 | Louisiana Tech, Blinn College |
| Clayton Meyer | OF | 2013-2015 | Morehead State, Southwestern Illinois College |
| Cory Meyer | C | 2017-2020 | Washington State, Spokane Falls CC, Boise State |
| Dan Meyer | IF | 2009-2011 | Northwestern State, Wharton County Junior College |
| Devin Meyer | P | 2016-2019 | Miami, Nova Southeastern |
| Grant Meyer | P | 2007-2007 | Western Illinois |
| Greg Meyer | IF | 2012-2013 | Sacramento State, American River College |
| Jacob Meyer | P | 2018-2018 | George Washington |
| Jacob Meyer | P | 2018-2020 | Cincinnati, Georgia Highlands |
| Jake Meyer | C | 2019-2020 | Arizona, Central Arizona College, Washington State |
| Jakob Meyer | P | 2020-2020 | Evansville |
| James Meyer | P | 2017-2019 | Valparaiso |
| Jason Meyer | P | 2004-2007 | Texas A&M |
| Jeff Meyer | C | 2004-2006 | Illinois |
| Jeff Meyer | 3B | 2005-2005 | New Orleans |
| Jonathan Meyer | P | 2010-2013 | Clemson |
| Jordan Meyer | P | 2015-2016 | La Salle, Lackawanna College |
| Josh Meyer | C | 2014-2017 | Grand Canyon |
| Justin Meyer | P-OF | 2003-2005 | Georgia State, Iowa Central CC |
| Justin Meyer | IF | 2019-2020 | Richmond |
| Ken Meyer | 1B | 1999-2002 | Notre Dame |
| Kyle Meyer | IF-OF | 2006-2009 | Marist |
| Levi Meyer | C | 2013-2014 | Florida Atlantic, Iowa Western CC |
| Mark Meyer | P | 2016-2017 | Wright State |
| Mark Meyer | P | 2017-2019 | Marshall, Akron |
| Mason Meyer | P | 2018-2020 | Liberty, Central Alabama CC |
| Matt Meyer | P | 2011-2011 | Niagara |
| Matt Meyer | P | 2015-2018 | Campbell, Jacksonville |
| Matthew Meyer | IF | 2019-2020 | Western Kentucky, Sinclair CC |
| Max Meyer | P | 2018-2020 | Minnesota |
| Mike Meyer | C | 2003-2003 | Eastern Illinois |
| Nate Meyer | IF | 2019-2020 | Cincinnati |
| Nick Meyer | P | 2002-2002 | Western Illinois, Rock Valley College |
| Reid Meyer | P | 2013-2014 | Texas Tech, Weatherford College |
| Rod Meyer | OF | 1992-1994 | Stanford |
| Ryan Meyer | OF | 2007-2007 | Eastern Illinois |
| Ryan Meyer | P-OF | 2004-2005 | New Orleans |
| Ryan Meyer | P | 2014-2015 | Central Florida |
| Sam Meyer | 1B | 2010-2013 | Pepperdine |
| Wyatt Meyer | IF-C | 2017-2019 | Western Illinois, Southeast CC, Missouri Western State University |
| Matt Meyerkopf | OF | 2008-2008 | Rutgers, Kean |
| Jon Meyerring | P | 2018-2020 | Miami, Iowa Western CC |
| Andy Meyers | IF | 2005-2009 | Monmouth |
| Bryson Meyers | P | 2005-2006 | Marshall, Potomac State College of WVU |
| Casey Meyers | P | 2013-2016 | Manhattan College |
| Chris Meyers | IF | 2018-2020 | Toledo |
| Dustin Meyers | P | 2010-2010 | NC A&T State |
| Graham Meyers | P | 2009-2011 | Louisiana Tech |
| Greg Meyers | P | 2008-2010 | Loyola Marymount |
| Jake Meyers | IF-P | 2016-2019 | Saint Joseph's |
| John Meyers | P | 2004-2005 | Air Force |
| Nick Meyers | P | 2006-2011 | Monmouth |
| Ryan Meyers | P | 2008-2011 | Miami |
| Sean Meyers | IF | 2008-2009 | Stephen F. Austin, Alvin CC |
| Grant Meylan | OF | 2015-2018 | Santa Clara |
| Scott Meylan | P | 2020-2020 | North Carolina Central |
| Keegan Meyn | OF | 2016-2020 | Ark-Little Rock, Northeastern Junior College, SE Missouri State |
| Rex Meyr | OF | 2008-2009 | Missouri |
| Jeff Meyrowitz | IF | 2002-2002 | Indiana |
| Isaac Meza | P | 2017-2019 | Cal State Bakersfield |
| Justin Meza | P-OF | 2011-2013 | Texas A&M-Corpus Christi, San Jacinto |
| Orlando Meza | P | 2014-2014 | San Diego State |
| Ian Mezlak | IF-C | 2012-2012 | Ohio |
| Matt Mezzancello | P | 2002-2005 | Lehigh |
| Justin Mezzaneras | OF | 2009-2010 | Sacramento State, Sierra College |
| Chris Mezzavilla | P | 2005-2006 | St. Mary's (CA), College of San Mateo |
| Ben Mezzenga | OF | 2016-2019 | Minnesota |
| 553 record(s) |
