| 1956-12-06 | Mel Clark | Purchased by Tigers from Senators. | OF-3B | 6-0 | 180 | R | R | 1926-07-07 | Letart,WV |
| MLB | 1951-1957 | 1951-1957 |
| 1956-12-06 | Jim Robertson | Traded by Tigers with Bobby Tiefenauer to Toronto (International) for Don Griffin and Archie Wilson. | C | 5-9 | 183 | R | R | 1928-01-29 | Chicago,IL |
| MLB | 1954-1955 | 1954-1955 |
| 1956-12-06 | Bobby Tiefenauer | Traded by Tigers with Jim Robertson to Toronto (International) for Don Griffin and Archie Wilson. | P | 6-2 | 185 | R | R | 1929-10-10 | Desloge,MO |
| MLB | 1952-1968 | 1952-1968 |
| 1956-12-06 | Archie Wilson | Traded by Toronto (International) with Don Griffin to Tigers for Jim Robertson and Bobby Tiefenauer. | OF | 6-0 | 175 | R | R | 1923-11-25 | Los Angeles,CA |
| MLB | 1951-1952 | 1951-1952 |
| 1956-12-05 | Eddie Robinson | Traded by Athletics with Bill Harrington, Jack Crimian and Jim Finigan to Tigers for Wayne Belardi, Virgil Trucks, Gene Host, Ned Garver and Cash. | 1B | 6-2 | 210 | L | R | 1920-12-15 | Paris,TX |
| MLB | 1942-1957 | 1942-1957 |
| 1956-12-05 | Jim Finigan | Traded by Athletics with Eddie Robinson, Bill Harrington and Jack Crimian to Tigers for Wayne Belardi, Virgil Trucks, Gene Host, Ned Garver and Cash. | 3B-2B | 5-11 | 175 | R | R | 1928-08-19 | Quincy,IL |
| MLB | 1954-1959 | 1954-1959 |
| 1956-12-05 | Jack Crimian | Traded by Athletics with Eddie Robinson, Bill Harrington and Jim Finigan to Tigers for Wayne Belardi, Virgil Trucks, Gene Host, Ned Garver and Cash. | P | 5-10 | 180 | R | R | 1926-02-17 | Philadelphia,PA |
| MLB | 1951-1957 | 1951-1957 |
| 1956-12-05 | Bill Harrington | Traded by Athletics with Eddie Robinson, Jack Crimian and Jim Finigan to Tigers for Wayne Belardi, Virgil Trucks, Gene Host, Ned Garver and Cash. | P | 5-11 | 160 | R | R | 1927-10-03 | Sanford,NC |
| MLB | 1953-1956 | 1953-1956 |
| 1956-12-05 | Wayne Belardi | Traded by Tigers with Virgil Trucks, Gene Host, Ned Garver and Cash to Athletics for Eddie Robinson, Bill Harrington, Jack Crimian and Jim Finigan. | 1B-OF | 6-1 | 185 | L | L | 1930-09-05 | St. Helena,CA |
| MLB | 1950-1956 | 1950-1956 |
| 1956-12-05 | Virgil Trucks | Traded by Tigers with Wayne Belardi, Gene Host, Ned Garver and Cash to Athletics for Eddie Robinson, Bill Harrington, Jack Crimian and Jim Finigan. | P | 5-11 | 198 | R | R | 1917-04-26 | Birmingham,AL |
| MLB | 1941-1958 | 1941-1958 |
| 1956-12-05 | Ned Garver | Traded by Tigers with Wayne Belardi, Virgil Trucks, Gene Host and Cash to Athletics for Eddie Robinson, Bill Harrington, Jack Crimian and Jim Finigan. | P-OF | 5-10 | 180 | R | R | 1925-12-25 | Ney,OH |
| MLB | 1948-1961 | 1948-1961 |
| 1956-12-05 | Gene Host | Traded by Tigers with Wayne Belardi, Virgil Trucks, Ned Garver and Cash to Athletics for Eddie Robinson, Bill Harrington, Jack Crimian and Jim Finigan. | P | 5-11 | 190 | B | L | 1933-01-01 | Leeper,PA |
| MLB | 1956-1957 | 1956-1957 |
| 1956-12-03 | Eddie Phillips | Selected by Tigers from Cardinals in the minor league draft. | H | 6-1 | 180 | B | R | 1931-07-08 | St. Louis,MO |
| MLB | 1953-1953 | 1953-1953 |
| 1956-12-03 | Bob Thorpe | Selected by Tigers from Braves in the minor league draft. | OF | 6-1 | 190 | R | R | 1926-11-19 | Caryville,FL |
| MLB | 1951-1953 | 1951-1953 |
| 1956-10-22 | Walt Masterson | Released by Tigers. | P | 6-2 | 189 | R | R | 1920-06-22 | Philadelphia,PA |
| MLB | 1939-1956 | 1939-1956 |
| 1956-09-17 | Dick Marlowe | Claimed on waivers by White Sox from Tigers. | P | 6-2 | 170 | R | R | 1929-06-27 | Hickory,NC |
| MLB | 1951-1956 | 1951-1956 |
| 1956-06-27 | Don Lee | Signed as undrafted amateur Free Agent by Tigers. | P | 6-4 | 210 | R | R | 1934-02-26 | Globe,AZ |
| MLB | 1957-1966 | 1957-1966 |
| 1956-06-26 | Kent Hadley | Signed as undrafted amateur Free Agent by Tigers. | 1B | 6-3 | 190 | L | L | 1934-12-17 | Pocatello,ID | 1956- 0- 0-DET
| MLB | 1958-1960 | 1958-1960 |
| 1956-05-15 | Jim Delsing | Traded by Tigers with Fred Hatfield to White Sox for Harry Byrd, Jim Brideweser and Bob Kennedy. | OF | 5-10 | 175 | L | R | 1925-11-13 | Rudolph,WI |
| MLB | 1948-1960 | 1948-1960 |
| 1956-05-15 | Fred Hatfield | Traded by Tigers with Jim Delsing to White Sox for Harry Byrd, Jim Brideweser and Bob Kennedy. | 3B-2B | 6-1 | 171 | L | R | 1925-03-18 | Lanett,AL |
| MLB | 1950-1958 | 1950-1958 |
| 1956-05-15 | Jim Brideweser | Traded by White Sox with Harry Byrd and Bob Kennedy to Tigers for Jim Delsing and Fred Hatfield. | SS-2B | 6-0 | 165 | R | R | 1927-02-13 | Lancaster,OH |
| MLB | 1951-1957 | 1951-1957 |
| 1956-05-15 | Bob Kennedy | Traded by White Sox with Harry Byrd and Jim Brideweser to Tigers for Jim Delsing and Fred Hatfield. | OF-3B | 6-2 | 193 | R | R | 1920-08-18 | Chicago,IL |
| MLB | 1939-1957 | 1939-1957 |
| 1956-05-15 | Harry Byrd | Traded by White Sox with Jim Brideweser and Bob Kennedy to Tigers for Jim Delsing and Fred Hatfield. | P | 6-1 | 188 | R | R | 1925-02-03 | Darlington,SC |
| MLB | 1950-1957 | 1950-1957 |
| 1956-05-11 | Walt Masterson | Signed as Free Agent by Tigers. | P | 6-2 | 189 | R | R | 1920-06-22 | Philadelphia,PA |
| MLB | 1939-1956 | 1939-1956 |
| 1956-04-09 | Joe Coleman | Released by Tigers. | P | --- | 200 | R | R | 1922-07-30 | Medford,MA |
| MLB | 1942-1955 | 1942-1955 |
| 1956-04-05 | Babe Birrer | Claimed on waivers by Orioles from Tigers. | P | 6-0 | 195 | R | R | 1928-07-04 | Buffalo,NY |
| MLB | 1955-1958 | 1955-1958 |
| 1956-01-01 | Fred Gladding | Signed as undrafted amateur Free Agent by Tigers. | P | 6-0 | 225 | L | R | 1936-06-28 | Flat Rock,MI | 1956- 0- 0-DET
| MLB | 1961-1973 | 1956-1973 |
| 1956-01-01 | Howie Koplitz | Signed as undrafted amateur Free Agent by Tigers. | P | 5-11 | 195 | R | R | 1938-05-04 | Oshkosh,WI | 1956- 0- 0-DET
| MLB | 1961-1966 | 1961-1966 |
| 1956-01-01 | Frank Kostro | Signed as undrafted amateur Free Agent by Tigers. | 3B-OF | 6-2 | 190 | R | R | 1937-08-04 | Windber,PA | 1956- 0- 0-DET
| MLB | 1962-1969 | 1962-1969 |
| 1956-01-01 | Phil Regan | Signed as undrafted amateur Free Agent by Tigers. | P | 6-3 | 200 | R | R | 1937-04-06 | Otsego,MI | 1956- 0- 0-DET
| MLB | 1960-1972 | 1960-1972 |
| 1956-01-01 | Buck Rodgers | Signed as undrafted amateur Free Agent by Tigers. | C-OF | 6-2 | 195 | B | R | 1938-08-16 | Delaware,OH | 1956- 0- 0-DET
| MLB | 1961-1969 | 1961-1977 |
| 1956-01-01 | Gordon Seyfried | Signed as undrafted amateur Free Agent by Tigers. | P | 6-0 | 185 | R | R | 1937-07-04 | Long Beach,CA | 1956- 0- 0-DET
| MLB | 1963-1964 | 1963-1964 |