| Harold Westerman | |
| Birth Date: | 21 December 1917 |
| Birth Place: | Ann Arbor, Michigan, U.S. |
| Death Place: | Orono, Maine, U.S. |
| Player Sport1: | Basketball |
| Player Years2: | 1939–1941 |
| Player Team2: | Michigan |
| Player Years3: | 1945–1946 |
| Player Team3: | Michigan |
| Coach Sport1: | Football |
| Coach Years2: | 1946–1948 |
| Coach Team2: | Hillsdale (assistant) |
| Coach Years3: | 1949–1950 |
| Coach Team3: | Maine (assistant) |
| Coach Years4: | 1951–1966 |
| Coach Team4: | Maine |
| Coach Sport5: | Basketball |
| Coach Years6: | 1946–1949 |
| Coach Team6: | Hillsdale |
| Admin Years1: | 1966–1982 |
| Admin Team1: | Maine |
| Overall Record: | 80–38–7 (football) 18–36 (basketball) |
| Bowl Record: | 0–1 |
| Championships: | Football 4 Yankee (1951–1952, 1961, 1965) |
Harold Scott Westerman (December 21, 1917 – December 29, 2011) was an American football and basketball coach and college athletic administrator. He served as the head football coach at the University of Maine from 1951 to 1966, compiling a record of 80–38–7 and winning four conference championships. Westerman was the head basketball coach at Hillsdale College from 1946 to 1949, tallying a mark of 18–36. He played college basketball for the University of Michigan.