| Thomas T. Reilley | |
| Birth Date: | 20 March 1883[1] |
| Birth Place: | Manhattan, New York, U.S. |
| Death Place: | Mount Vernon, New York, U.S.[2] |
| Coach Years1: | 1914–1915 |
| Coach Team1: | NYU |
| Overall Record: | 9–7–2 |
Thomas Thornton Reilley (March 20, 1883 – January 27, 1940) was an American college football coach and politician. He served the 12th head football coach at New York University (NYU). He held that position for two seasons, 1914 and 1915, leading the NYU Violets to a record of 9–7–2.[3] Having come off a scoreless, losing season in 1913 under Jake High, NYU's record under Reilley in 1914 of 5–3–1 showed a marked improvement. However, Reilleys' tenure at NYU ended in 1915 with a 70–0 loss to Rutgers.[4]
Reilley was a Democratic member of the New York State Assembly (New York Co., 21st D.) in 1916.