| Position: | Defensive tackle/Defensive end |
| Number: | 60, 66 |
| Birth Date: | 5 January 1952 |
| Birth Place: | Quantico, Virginia, U.S. |
| Height Ft: | 6 |
| Height In: | 6 |
| Weight Lbs: | 278 |
| High School: | Oceanside (Oceanside, California) |
| College: | UCLA |
| Draftyear: | 1974 |
| Draftround: | 1 |
| Draftpick: | 10 |
| Teams: | |
| Statlabel1: | Games played |
| Statvalue1: | 46 |
| Statlabel2: | Games started |
| Statvalue2: | 26 |
| Statlabel3: | Fumble recoveries |
| Statvalue3: | 4 |
| Pfr: | S/SandBi21 |
William Patrick Sandifer (born January 5, 1952) is an American former professional football player who was a defensive lineman for five seasons for the San Francisco 49ers and Seattle Seahawks of the National Football League (NFL).[1]