| Sedat Celasun | |
| Birth Date: | 1915[1] |
| Birth Place: | Istanbul, Ottoman Empire |
| Death Date: | 17 July 1998 |
| Office: | General Commander of the Gendarmerie of Turkey |
| Term Start: | 25 August 1978 |
| Term End: | 6 December 1983 |
| Predecessor: | Şahap Yardımoğlu |
| Successor: | Mehmet Buyruk |
| Allegiance: | Turkey |
| Branch: | Turkish Army |
| Rank: | General |
Sedat Celasun (1915, in Istanbul – 17 July 1998) was a Turkish general. He was General Commander of the Gendarmerie of Turkey from 1978 to 1983. He was one of the five leaders of the 1980 military coup, and after the coup he was a member of the Presidential Council.