| John O'Hara | |
| Birth Date: | 13 January 1944 |
| Coach Years1: | 1967 |
| Coach Team1: | Mangum HS (OK) |
| Coach Years2: | 1968–1969 |
| Coach Team2: | Palo Duro HS (TX) (OL) |
| Coach Years3: | 1970–1972 |
| Coach Team3: | Lee HS (TX) (OC) |
| Coach Years4: | 1973–1978 |
| Coach Team4: | Baylor (assistant) |
| Coach Years5: | 1979–1982 |
| Coach Team5: | Baylor (OC) |
| Coach Years6: | 1983–1989 |
| Coach Team6: | Southwest Texas State |
| Coach Years7: | 1990–1991 |
| Coach Team7: | Iowa (OL) |
| Overall Record: | 36–41 |
| Tournament Record: | 0–1 (NCAA D-I-AA playoffs) |
| Championships: | 1 LSC (1983) |
John Barton O'Hara (January 13, 1944 – February 22, 1992) was an American football coach. He served as the head football coach at Southwest Texas State University–now known as Texas State University–from 1983 to 1989, compiling a record of 36–41.[1] O'Hara died in 1992 on a Caribbean cruise while he was a member of the University of Iowa coaching staff.[2] [3]