| 1917-01-01 | Earl Blackburn | Chicago Cubs | Traded from Boston Braves with Fred Mitchell to Chicago Cubs for Joe Kelly | MLB |
| 1917-01-01 | Ping Bodie | Philadelphia Athletics | Traded from San Francisco (PCL) to Philadelphia Athletics for Charlie Pick | MLB |
| 1917-01-01 | Charlie Pick | | Traded from Philadelphia Athletics to San Francisco (PCL) for Ping Bodie | MLB |
| 1917-01-01 | Joe Kelly | Boston Braves | Traded from Chicago Cubs to Boston Braves for Fred Mitchell and Earl Blackburn | MLB |
| 1917-01-01 | Fred Mitchell | Chicago Cubs | Traded from Boston Braves with Earl Blackburn to Chicago Cubs for Joe Kelly | MLB |
| 1917-01-27 | Jack Bentley | | Traded from Washington Senators I with Rip Williams and Turner Barber to Baltimore (International) for Sam Crane | MLB |
| 1917-01-27 | Sam Crane | Washington Senators I | Traded from Baltimore (International) to Washington Senators I for Jack Bentley, Rip Williams and Turner Barber | MLB |
| 1917-01-27 | Alva Williams | | Traded from Washington Senators I with Jack Bentley and Turner Barber to Baltimore (International) for Sam Crane | MLB |
| 1917-01-27 | Turner Barber | | Traded from Washington Senators I with Jack Bentley and Rip Williams to Baltimore (International) for Sam Crane | MLB |
| 1917-04-02 | Al Demaree | Chicago Cubs | Traded from Philadelphia Phillies to Chicago Cubs for Jimmy Lavender | MLB |
| 1917-04-02 | Jimmy Lavender | Philadelphia Phillies | Traded from Chicago Cubs to Philadelphia Phillies for Al Demaree | MLB |
| 1917-04-29 | Jack Nabors | | Traded from Philadelphia Athletics to Indianapolis (American Association) for Cy Falkenberg | MLB |
| 1917-04-29 | Cy Falkenberg | Philadelphia Athletics | Traded from Indianapolis (American Association) to Philadelphia Athletics for Jack Nabors | MLB |
| 1917-05-22 | Jake Pitler | Pittsburgh Pirates | Traded from Chattanooga (Southern Association) to Pittsburgh Pirates for Billy Gleason | MLB |
| 1917-05-22 | Billy Gleason | | Traded from Pittsburgh Pirates to Chattanooga (Southern Association) for Jake Pitler | MLB |
| 1917-05-27 | Scott Perry | Boston Braves | Traded by Atlanta (Southern Association) to Boston Braves for future considerations | MLB |
| 1917-06-14 | Bob Steele | Pittsburgh Pirates | Traded from St. Louis Cardinals to Pittsburgh Pirates for Doug Baird | MLB |
| 1917-06-14 | Doug Baird | St. Louis Cardinals | Traded from Pittsburgh Pirates to St. Louis Cardinals for Bob Steele | MLB |
| 1917-07-01 | Lou North | | Traded from St. Louis Cardinals with Paddy Livingston, Sam Bohne and Bob Bescher to Milwaukee (American Association) for Marv Goodwin | MLB |
| 1917-07-01 | Sam Bohne | | Traded from St. Louis Cardinals with Paddy Livingston, Lou North and Bob Bescher to Milwaukee (American Association) for Marv Goodwin | MLB |
| 1917-07-01 | Marv Goodwin | St. Louis Cardinals | Traded from Milwaukee (American Association) to St. Louis Cardinals for Paddy Livingston, Sam Bohne, Lou North and Bob Bescher (7/3/1917) | MLB |
| 1917-07-01 | Paddy Livingston | | Traded from St. Louis Cardinals with Sam Bohne, Lou North and Bob Bescher to Milwaukee (American Association) for Marv Goodwin | MLB |
| 1917-07-03 | Bob Bescher | | Traded from St. Louis Cardinals with Paddy Livingston, Sam Bohne and Lou North to Milwaukee (American Association) for Marv Goodwin (7/1/1917) | MLB |
| 1917-07-15 | Armando Marsans | New York Yankees | Traded from St. Louis Browns to New York Yankees for Lee Magee | MLB |
| 1917-07-15 | Lee Magee | St. Louis Browns | Traded from New York Yankees to St. Louis Browns for Armando Marsans | MLB |
| 1917-08-05 | Turner Barber | Chicago Cubs | Traded from Baltimore (International) to Chicago Cubs for Merwin Jacobson | MLB |
| 1917-08-05 | Merwin Jacobson | | Traded from Chicago Cubs to Baltimore (International) for Turner Barber | MLB |
| 1917-08-15 | Pete Kilduff | Chicago Cubs | Traded from New York Giants to Chicago Cubs for Al Demaree | MLB |
| 1917-08-15 | Al Demaree | New York Giants | Traded from Chicago Cubs to New York Giants for Pete Kilduff | MLB |
| 1917-08-23 | Wickey McAvoy | Philadelphia Athletics | Traded from Baltimore (International) with Red Shannon to Philadelphia Athletics for Otis Lawry (1/15/1918), Pug Griffin (1/15/1918), Red Hill (1/15/1918), Rube Parnham (1/15/1918) and Billy Meyer (1/15/1918) | MLB |
| 1917-08-23 | Red Shannon | Philadelphia Athletics | Traded from Baltimore (International) with Wickey McAvoy to Philadelphia Athletics for Otis Lawry (1/15/1918), Pug Griffin (1/15/1918), Red Hill (1/15/1918), Rube Parnham (1/15/1918) and Billy Meyer (1/15/1918) | MLB |
| 1917-12-11 | Grover Alexander | Chicago Cubs | Traded from Philadelphia Phillies with Bill Killefer to Chicago Cubs for Mike Prendergast and Pickles Dillhoefer | MLB |
| 1917-12-11 | Pickles Dillhoefer | Philadelphia Phillies | Traded from Chicago Cubs with Mike Prendergast to Philadelphia Phillies for Pete Alexander and Bill Killefer | MLB |
| 1917-12-11 | Mike Prendergast | Philadelphia Phillies | Traded from Chicago Cubs with Pickles Dillhoefer to Philadelphia Phillies for Pete Alexander and Bill Killefer | MLB |
| 1917-12-11 | Bill Killefer | Chicago Cubs | Traded from Philadelphia Phillies with Pete Alexander to Chicago Cubs for Mike Prendergast and Pickles Dillhoefer | MLB |
| 1917-12-14 | Wally Schang | Boston Red Sox | Traded from Philadelphia Athletics with Amos Strunk and Joe Bush to Boston Red Sox for Vean Gregg, Merlin Kopp and Pinch Thomas | MLB |
| 1917-12-14 | Bullet Joe Bush | Boston Red Sox | Traded from Philadelphia Athletics with Amos Strunk and Wally Schang to Boston Red Sox for Vean Gregg, Merlin Kopp and Pinch Thomas | MLB |
| 1917-12-14 | Merlin Kopp | Philadelphia Athletics | Traded from Boston Red Sox with Vean Gregg and Pinch Thomas to Philadelphia Athletics for Amos Strunk, Joe Bush and Wally Schang | MLB |
| 1917-12-14 | Pinch Thomas | Philadelphia Athletics | Traded from Boston Red Sox with Vean Gregg and Merlin Kopp to Philadelphia Athletics for Amos Strunk, Joe Bush and Wally Schang | MLB |
| 1917-12-14 | Amos Strunk | Boston Red Sox | Traded from Philadelphia Athletics with Joe Bush and Wally Schang to Boston Red Sox for Vean Gregg, Merlin Kopp and Pinch Thomas | MLB |
| 1917-12-14 | Vean Gregg | Philadelphia Athletics | Traded from Boston Red Sox with Merlin Kopp and Pinch Thomas to Philadelphia Athletics for Amos Strunk, Joe Bush and Wally Schang | MLB |
| 1917-12-15 | Burt Shotton | Washington Senators I | Traded from St. Louis Browns with Doc Lavan to Washington Senators I for Bert Gallia | MLB |
| 1917-12-15 | Doc Lavan | Washington Senators I | Traded from St. Louis Browns with Burt Shotton to Washington Senators I for Bert Gallia | MLB |
| 1917-12-15 | Bert Gallia | St. Louis Browns | Traded from Washington Senators I to St. Louis Browns for Burt Shotton and Doc Lavan | MLB |
| 1917-12-26 | Dode Paskert | Chicago Cubs | Traded from Philadelphia Phillies to Chicago Cubs for Cy Williams | MLB |
| 1917-12-26 | Cy Williams | Philadelphia Phillies | Traded from Chicago Cubs to Philadelphia Phillies for Dode Paskert | MLB |
| 46 record(s) |