| John Keith | |
| Position: | Safety |
| Number: | 28 |
| Birth Date: | 4 February 1977 |
| Birth Place: | Newnan, Georgia, U.S. |
| Draftyear: | 2000 |
| Draftround: | 4 |
| Draftpick: | 108 |
| High School: | Sharpsburg (GA) East Coweta |
| College: | Furman (1995–1999) |
| Pastteams: | |
| Statlabel1: | Tackles |
| Statvalue1: | 57 |
| Statlabel2: | Sacks |
| Statvalue2: | 1 |
| Statlabel3: | Interceptions |
| Statvalue3: | 1 |
John Martin Keith (born February 4, 1977) is a former professional American football player who played safety for four seasons for the San Francisco 49ers in the National Football League (NFL).[1] He was selected in the fourth round of the 2000 NFL draft.[2]