| Sport(s) | Football |
|---|---|
| Biographical details | |
| Born |
September 28, 1941 Ceres, California |
| Died | March 14, 2010 (aged 68) Rancho Murieta, California |
| Playing career | |
| 1962–1963 | Sacramento State |
| Coaching career (HC unless noted) | |
| 1971–1977 | |
| 1978–1992 | Sacramento State |
| Head coaching record | |
| Overall | 84–73–2 (college) |
| Tournaments | 2–1 (NCAA D-II playoffs) |
| Accomplishments and honors | |
| Championships | |
| 2 WFC (1986) | |
Robert J. Mattos (September 28, 1941 – March 14, 2010) was an American football coach. He served as the head football coach at California State University, Sacramento from 1978 to 1992, compiling a record of 84–73–2. Prior to coaching at Sacramento State, Mattos was the head football coach at in . Mattos died of brain cancer March 14, 2010, at his home in Rancho Murieta, California.