| Current position | |
|---|---|
| Title | Head coach |
| Team | Bowdoin |
| Conference | NESCAC |
| Record | 9–30 |
| Biographical details | |
| Born | c. 1978 (age 45–46) Carmel, Indiana, U.S. |
| Alma mater | Wabash College (2001) |
| Playing career | |
| 1997–2000 | Wabash |
| Position(s) | Linebacker |
| Coaching career (HC unless noted) | |
| 2001 | Wabash (OLB) |
| 2002 | Heidelberg (LB) |
| 2003–2005 | Whittier (DC) |
| 2006–2010 | Whittier |
| 2011–2015 | Wabash (DC) |
| 2016–2018 | Allegheny |
| 2019–present | Bowdoin |
| Head coaching record | |
| Overall | 31–83 |
| Accomplishments and honors | |
| Awards | |
| 2× All-American (1999–2000) 3× All-NCAC (1998–2000) | |
William J. Hammer (born c. 1978) is an American college football coach. He is the head football coach for Bowdoin College, a position he has held since 2019.[1][2][3] He was the head football coach for Whittier College from 2006 to 2010 and Allegheny College from 2016 to 2018.[4][5][6][7] He also coached for Wabash and Heidelberg.[8] He played college football for Wabash as a linebacker.[9]