| Chad Allen | CLE, FLO, MIN, TEX | CF, DH, LF, OF, RF |
| Dick Allen | CHA, LAN, OAK, PHI, SLN | 1B, 2B, 3B, CF, DH, LF, OF, SS |
| Dusty Allen | DET, SDN | 1B, 3B, DH, LF, OF, RF |
| Ethan Allen | CHN, CIN, NY1, PHI, SLA, SLN | OF |
| Frank Allen | BRO, BSN, PTF | P |
| Ham Allen | MID | OF, SS |
| Hank Allen | CHA, ML4, WS2 | 1B, 2B, 3B, C, CF, LF, OF, RF |
| Hezekiah Allen | PHI | C |
| Horace Allen | BRO | OF |
| Jack Allen | CL2, SR1 | 3B, OF |
| Jamie Allen | SEA | 3B, DH |
| John Allen | BLF | P |
| Johnny Allen | BRO, CLE, NY1, NYA, SLA | P |
| Kim Allen | SEA | 2B, CF, DH, LF, OF, RF, SS |
| Lloyd Allen | CAL, CHA, TEX | P |
| Myron Allen | BSN, CL3, KC2, NY1 | 2B, 3B, OF, P, SS |
| Neil Allen | CHA, CLE, NYA, NYN, SLN | P |
| Nick Allen | BUF, CHN, CIN | C |
| Pete Allen | CL4 | C |
| Rod Allen | CLE, DET, SEA | DH, LF, OF, RF |
| Ron Allen | SLN | 1B |
| Sled Allen | SLA | 1B, C |
| Gary Allenson | BOS, TOR | 3B, C, DH |
| Jermaine Allensworth | KCA, NYN, PIT | CF, LF, OF, RF |
| Gene Alley | PIT | 2B, 3B, SS |
| Gair Allie | PIT | 3B, SS |
| Bob Allietta | CAL | C |
| Andy Allison | BR1 | 1B, OF |
| Art Allison | CL1, ELI, HR1, LS1, WS6 | 1B, 2B, C, OF |
| Bill Allison | BR1 | 1B, 2B, OF |
| Bob Allison | MIN, WS1 | 1B, CF, LF, OF, RF |
| Dana Allison | OAK | P |
| Doug Allison | BL2, BR1, ELI, HAR, HR1, NY2, PRO, TRO, WS3 | 1B, 2B, C, OF, P, SS |
| Mack Allison | SLA | P |
| Milo Allison | CHN, CLE | OF |
| Beau Allred | CLE | CF, DH, LF, OF, RF |
| Mel Almada | BOS, BRO, SLA, WS1 | 1B, OF |
| Armando Almanza | ARI, ATL, FLO | P |
| Carlos Almanzar | CIN, NYA, SDN, TEX, TOR | P |
| Rafael Almeida | CIN | 2B, 3B, OF, SS |
| Bill Almon | CHA, MON, NYN, OAK, PHI, PIT, SDN | 1B, 2B, 3B, C, CF, DH, LF, OF, RF, SS |
| Erick Almonte | NYA | DH, SS |
| Hector Almonte | BOS, FLO, MON | P |
| Luis Aloma | CHA | P |
| Roberto Alomar | ARI, BAL, CHA, CLE, NYN, SDN, TOR | 2B, DH, SS |
| Sandy Alomar | CHA, CLE, COL, LAN, NYN, SDN, TEX | 1B, C, DH |
| Sandy Alomar | ATL, CAL, CHA, ML1, NYA, NYN, TEX | 1B, 2B, 3B, DH, LF, OF, RF, SS |
| Felipe Alou | ATL, ML1, ML4, MON, NYA, OAK, SFN | 1B, 3B, CF, LF, OF, RF, SS |
| Jesus Alou | HOU, NYN, OAK, SFN | 1B, CF, DH, LF, OF, RF |
| Matty Alou | NYA, OAK, PIT, SDN, SFN, SLN | 1B, CF, DH, LF, OF, P, RF |