| Name | Position | Years |
|---|---|---|
| Travis Uale | S | 2008-11 |
| George Udo | DB | 2019-22 |
| Mike Ulrich | QB | 1996 |
| Cade Uluave | LB | 2026 |
| Mike Ulufale | DE | 1993-95 |
| Marlon Undjhom | FB | 1946 |
| Morgan Unga | LB | 2012, 2015-18 |
| Uani 'Unga | LB | 2011-13 |
| Victor Unga | DL | 2008 |
| Harvey Unga | RB | 2006-10 |
| Dominik Unger | DT | 1987 |
| Eli Unutoa | OL | 2020 |
| Mo Unutoa | OL | 2019-21 |
| Morris Unutoa | C-LS | 1989, 1993-95 |
| Keith Uperesa | OG | 1974-77 |
| Nathan Upham | WR | 2020 |
| Dan Urbina | LB | 2000 |
| Ed Ure | T | |
| Mark Uselman | K | 1974-75 |
| Kalolo Utu | DL | 2013-14 |
| Tana Uyema | DB | 2008 |