| Péter Komjáth | |
| Birth Date: | 8 April 1953 |
| Birth Place: | Budapest |
| Nationality: |  Hungary |
| Fields: | Mathematics |
| Workplaces: | Eötvös Loránd University |
| Alma Mater: | Eötvös Loránd University |
| Doctoral Advisor: | András Hajnal |
| Awards: | Paul Erdős Prize |
Péter Komjáth (born 8 April 1953) is a Hungarian mathematician, working in set theory, especially combinatorial set theory. Komjáth is a professor at the Faculty of Sciences of the Eötvös Loránd University. He is currently a visiting faculty member at Emory University in the department of Mathematics and Computer Science.
Komjáth won a gold medal at the International Mathematical Olympiad in 1971. His Ph.D. advisor at Eötvös was András Hajnal, and he has two joint papers[1] with Paul Erdős. He received the Paul Erdős Prize in 1990. He is a member of the Hungarian Academy of Sciences.