Athletics players with a 40+ HR season
7 players
7 players have had a 40+ HR season for the Athletics. Jimmie Foxx, Mark McGwire, and Khris Davis did it 3 times each.
| Player | Pos | Seasons | Best |
|---|---|---|---|
| Jimmie Foxx | — | 1932–1934 | 58 |
| Mark McGwire | 1B | 1987, 1992, 1996 | 52 |
| Khris Davis | DH | 2016–2018 | 48 |
| Jose Canseco | DH | 1988, 1991 | 44 |
| Reggie Jackson | DH | 1969 | 47 |
| Jason Giambi | DH | 2000 | 43 |
| Gus Zernial | — | 1953 | 42 |
Reached with the club in one regular season. Every season since 1876 is on file. A season split between two clubs is filed as one combined line and counts for neither.