| János Petrán | |
| Order: | Hungarian Ambassador to the United States |
| Term Start: | 2 September 1981 |
| Term End: | 2 August 1983 |
| Predecessor: | Ferenc Esztergályos |
| Successor: | Vencel Házi |
| Birth Date: | 28 August 1934 |
| Birth Place: | Oroszlány, Hungary |
| Profession: | politician |
| Party: | MSZMP |
János Petrán (born 28 August 1934) is a former Hungarian diplomat and security agent, who served as Hungarian Ambassador to the United States[1] between 1981 and 1983. After that he represented Hungary at the international organizations based in Vienna from 1983 to 1985.