| Shimon Even | |
| Birth Date: | 15 June 1935 |
| Birth Place: | Tel Aviv, British Mandate for Palestine (present-day Israel) |
| Field: | Computer Science, Cryptography |
| Work Institution: | Technion, Weizmann Institute of Science |
| Alma Mater: | Harvard University |
| Doctoral Advisor: | Hao Wang |
| Doctoral Students: | Oded Goldreich, Baruch Awerbuch |
Shimon Even (Hebrew: שמעון אבן; June 15, 1935 – May 1, 2004) was an Israeli computer science researcher. His main topics of interest included algorithms, graph theory and cryptography. He was a member of the Computer Science Department at the Technion since 1974. Shimon Even was the PhD advisor of Oded Goldreich, a prominent cryptographer.