| Marcus Riley | |
| Number: | 55, 57 |
| Position: | Linebacker |
| Birth Date: | 14 April 1985 |
| Birth Place: | Sacramento, California, U.S. |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lbs: | 230 |
| College: | Fresno State |
| Undraftedyear: | 2008 |
| Pastteams: | |
| Highlights: | |
Marcus Riley (born April 14, 1985) is a former American football linebacker. He was signed by the Green Bay Packers as an undrafted free agent in 2008. He played college football at Fresno State.
Riley has also been a member of the St. Louis Rams and Chicago Bears.
Riley is a cousin of former NFL wide receiver Henry Ellard.