| Current position | |
|---|---|
| Title | Co-head coach |
| Team | Plymouth State |
| Conference | MASCAC |
| Record | 100–107 |
| Biographical details | |
| Born | c. 1965 (age 58–59) |
| Alma mater | Trinity College (1986) University of Rhode Island (1989) |
| Coaching career (HC unless noted) | |
| 1986–1988 | Rhode Island (GA) |
| 1989–1991 | Maryland (GA) |
| 1992 | Hartwick (OC/ST) |
| 1993–1996 | Ferrum (OC/ST) |
| 1997 | Lynn Classical HS (MA) (assistant) |
| 1998–2000 | UMass Boston |
| 2001–2002 | Bryant (DC) |
| 2003–2019 | Plymouth State |
| 2020–present | Plymouth State (co-HC) |
| Head coaching record | |
| Overall | 101–135 |
| Bowls | 2–1 |
| Tournaments | 0–2 (NCAA D-III playoffs) |
| Accomplishments and honors | |
| Championships | |
| 1 NEFC (2008) 1 MASCAC (2017) | |
Paul Castonia (born c. 1965) is an American college football coach. He is the co-head football coach for Plymouth State University, a position he has held since 2020. He also was the head football coach for University of Massachusetts Boston from 1998 to 2000. He previously coached for Rhode Island, Maryland, Hartwick, Ferrum, and Bryant.[1][2][3]