| Hassan Ayat | |
| Birth Date: | 24 June 1938 |
| Birth Place: | Najafabad, Iran |
| Death Place: | Tehran, Iran |
| Office1: | Member of Parliament |
| Term Start1: | 28 May 1980 |
| Term End1: | 5 August 1981 |
| Constituency1: | Tehran, Rey and Shemiranat |
| Office2: | Member of Assembly of Experts for Constitution |
| Term Start2: | 15 August 1979 |
| Term End2: | 15 November 1979 |
| Constituency2: | Isfahan Province |
| Alma Mater: | University of Tehran |
| Party: | |
| Nationality: | Iranian |
Hassan Ayat (24 June 1938 – 5 August 1981) was an Iranian politician. He was member of Parliament of Iran in first assembly after the Iranian Revolution and also member of Assembly of Experts for Constitution.
He was born on 24 June 1938 in Najafabad, Isfahan. After spending time in studying elementary and secondary schools in Najafabad, He moved to Tehran for higher education and was graduated from University of Tehran. He was a classmate with Abulhassan Banisadr. He was journalist from 1958 to 1965 and was worked in Ettela'at.
Ayat was a member of Zahmatkeshan Party before Iranian Revolution but resigned from the party. Ayat joined the Islamic Republican Party and became a member of its central committee.[1] He was elected as a member of Assembly of Experts for Constitution in Constitutional Convention election. After that, Ayat was elected as a member of Parliament from Tehran. He was one of the main leaders in impeachment of President Abulhassan Banisadr.He was killed when he was on his way to submit the hard evidence by some in front of his house.[2]
On 5 August 1981, five days after Hafte Tir bombing, Ayat was assassinated by People's Mujahedin of Iran in front of his house by two men who then escaped on motorcycles.