| Position: | Defensive back |
| Number: | 26, 31 |
| Birth Date: | 17 September 1974 |
| Birth Place: | Erie, Pennsylvania, U.S. |
| Height Ft: | 5 |
| Height In: | 10 |
| Weight Lbs: | 179 |
| High School: | Erie (PA) East |
| College: | Maryland |
| Undraftedyear: | 1999 |
| Pastteams: | |
| Statlabel1: | Games played |
| Statvalue1: | 45 |
| Statlabel2: | Tackles |
| Statvalue2: | 22 |
| Statlabel3: | Fumble recoveries |
| Statvalue3: | 5 |
| Pfr: | CrosCl21 |
Clifton Marcel Crosby (born September 17, 1974) is an American former professional football player who played defensive back for four seasons for the St. Louis Rams and Indianapolis Colts in the National Football League (NFL). After retiring from the NFL in 2004, he refocused his energy to become a motivational speaker and youth advocate.