| Oleg Morgun | |
| Native Name Lang: | ru |
| Birth Date: | 19 March 1967 |
| Birth Place: | Sadkovtsy, Vinnytsia Oblast, Ukrainian SSR, Soviet Union |
| Status: | Incumbent (contested) |
| Order: | 51st |
| Office: | Mayor of Mariupol |
| Termstart: | disputed with Vadym Boychenko 23 January 2023 |
| Predecessor: | Konstantin Ivashchenko |
| Appointer: | Denis Pushilin |
Oleg Valerievich Morgun (ru|Олег Моргун; born 19 March 1967) is a Ukrainian separatist politician and former police officer serving as the de facto mayor of Mariupol since January 2023.
Morgun is from Vinnytsia where he worked as a police chief. He was the acting head of police of Mariupol from June to July 2014.[1]
He was the de facto head of the Novoazovsk Raion of the Donetsk People's Republic under Alexander Zakharchenko. Morgun was succeeded by Vasily Ovcharov.[2] Morgun was also the head of Yasynuvata.
On January 23, 2023, he was appointed by Denis Pushilin to serve as the de facto mayor of Mariupol.[3] [4] Morgun replaced Konstantin Ivashchenko.