| Playing career | |
|---|---|
| Football | |
| 1978 | Missouri |
| 1980–1981 | Baylor |
| Baseball | |
| 1980–1982 | Baylor |
| Position(s) | Quarterback, shortstop, left field |
| Coaching career (HC unless noted) | |
| Football | |
| 1982–1986 | Southwest Texas State (assistant) |
| Baseball | |
| 1985–1986 | Southwest Texas State |
| Head coaching record | |
| Overall | 60–52 (baseball) |
| Accomplishments and honors | |
| Awards | |
Jay T. Jeffrey is an American former college athlete and coach. He played college football at the University of Missouri for one season before transferring to Baylor University where he participated in both football and baseball. Jeffrey was also the first baseball head coach of Southwest Texas State University (now known as Texas State University–San Marcos) in their transition to NCAA Division I competition in 1985.