| Number: | 75 |
| Position: | Defensive tackle Defensive end |
| Birth Date: | 17 December 1958 |
| Birth Place: | Sioux City, Iowa, U.S. |
| Height Ft: | 6 |
| Height In: | 4 |
| Weight Lb: | 260 |
| High School: | Sioux City (IA) Bishop Heelan Catholic |
| College: | Iowa |
| Draftyear: | 1981 |
| Draftround: | 2 |
| Draftpick: | 36 |
| Teams: | |
| Highlights: |
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| Statlabel1: | Sacks |
| Statvalue1: | 3.0 |
| Statlabel2: | Safeties |
| Statvalue2: | 1 |
| Pfr: | HartJo20 |
John Daniel Harty (born December 17, 1958) is an American former professional football player who was a defensive tackle in the National Football League (NFL). Harty was selected in the second round by the San Francisco 49ers out of the University of Iowa in the 1981 NFL draft.