| Tom Grebis | |
| Birth Date: | 21 December 1930 |
| Birth Place: | Windber, Pennsylvania, US |
| Death Place: | Oreland, Pennsylvania, US |
| Player Years1: | 1950–1953 |
| Player Team1: | Drexel |
| Player Positions: | Halfback |
| Coach Years1: | 1957–1960 |
| Coach Team1: | Drexel (assistant) |
| Coach Years2: | 1961–1968 |
| Coach Team2: | Drexel |
| Overall Record: | 39–24–2 |
| Championships: | 1 MAC Southern CollegeDivision (1962) |
Thomas J. Grebis (December 21, 1930 – January 24, 2005) was an American football player and coach.
He served as the head football coach at Drexel University from 1961 to 1968, compiling a record of 39–24–2.[1] Grebis played college football at Drexel as a halfback and was co-captain of the 1953 Drexel Dragons football team. Grebis was a member of Drexel's faculty and taught chemistry. He was an assistant football coach at Drexel for four season before succeeding Jack Hinkle at head coach in 1961.[2]