| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When | Appl |
| 4/3/1979 | Cal | Barlow | Placed on Injured List | | | Before | Yes |
| 4/28/1979 | Cal | Barlow | Activated from Injured List | | | Before | Yes |
| 4/28/1979 | Cal | Donohue | Demoted to reserve roster | | | Before | Yes |
| 5/4/1979 | Cal | Campaneris | Acquired via trade | Tex | | Before | No |
| 5/4/1979 | Cal | Mulliniks | Demoted to reserve roster | | | Before | No |
| 5/21/1979 | Cal | Humphrey | Placed on Injured List | | | Before | No |
| 5/21/1979 | Cal | Ramirez | Demoted to reserve roster | | | Before | No |
| 5/21/1979 | Cal | Thon | Promoted to active roster | | | Before | No |
| 5/24/1979 | Cal | Donohue | Promoted to active roster | | | Before | No |
| 6/2/1979 | Cal | Miller,R | Placed on Injured List | | 6/2/1979 | Before | No |
| 6/5/1979 | Cal | Carew | Placed on Injured List | | 6/5/1979 | Before | No |
| 6/5/1979 | Cal | Harlow | Acquired via trade | Bal | | Before | No |
| 6/6/1979 | Cal | Miller,D | Traded away | Tor | | Before | No |
| 6/11/1979 | Cal | Eddy | Promoted to active roster | | | Before | No |
| 6/11/1979 | Cal | Humphrey | Activated from Injured List | | | Before | No |
| 6/12/1979 | Cal | Humphrey | Placed on Injured List | | 6/12/1979 | Before | No |
| 6/18/1979 | Cal | Hampton | Promoted to active roster | | | Before | No |
| 6/19/1979 | Cal | Knapp | Placed on Injured List | | 6/19/1979 | Before | No |
| 6/24/1979 | Cal | Botting | Promoted to active roster | | | Before | No |
| 7/9/1979 | Cal | Miller,R | Activated from Injured List | | | Before | No |
| 7/9/1979 | Cal | Tanana | Placed on Injured List | | 7/9/1979 | Before | No |
| 7/16/1979 | Cal | Hampton | Demoted to reserve roster | | | Before | No |
| 7/19/1979 | Cal | Carew | Activated from Injured List | | | Before | No |
| 7/31/1979 | Cal | Humphrey | Released | | | Before | No |
| 8/10/1979 | Cal | Eddy | Demoted to reserve roster | | | Before | No |
| 8/10/1979 | Cal | Knapp | Activated from Injured List | | | Before | No |
| 8/16/1979 | Cal | Rudi | Placed on Injured List | | 8/16/1979 | Before | No |
| 8/19/1979 | Cal | Clark | Promoted to active roster | | | Before | No |
| 8/29/1979 | Cal | Botting | Demoted to reserve roster | | | Before | No |
| 8/29/1979 | Cal | Montague | Acquired via trade | Sea | | Before | No |
| 9/3/1979 | Cal | Harper | Promoted to active roster | | | Before | No |
| 9/4/1979 | Cal | Tanana | Activated from Injured List | | | Before | No |
| 9/10/1979 | Cal | Botting | Promoted to active roster | | | Before | No |
| 9/10/1979 | Cal | Eddy | Promoted to active roster | | | Before | No |
| 9/10/1979 | Cal | Mulliniks | Promoted to active roster | | | Before | No |
| 9/11/1979 | Cal | Ferris | Promoted to active roster | | | Before | No |
| 9/11/1979 | Cal | Harris | Promoted to active roster | | | Before | No |
| 9/11/1979 | Cal | Schuler | Promoted to active roster | | | Before | No |
| 9/20/1979 | Cal | Garr | Acquired via trade | ChA | | Before | No |
| 9/28/1979 | Cal | Rudi | Activated from Injured List | | | Before | No |