| Mariupol uezd | |
| Native Name: | Маріупольскій уѣздъ |
| Native Name Lang: | ru |
| Settlement Type: | Uezd |
| Mapsize: | 225px |
| Subdivision Type: | Country |
| Subdivision Name: | Russian Empire |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Yekaterinoslav |
| Established Title: | Established |
| Established Date: | 1780 |
| Extinct Title: | Abolished |
| Extinct Date: | 1923 |
| Seat Type: | Capital |
| Seat: | Mariupol |
| Area Total Km2: | 8,989.5 |
| Population As Of: | 1897 |
| Population Total: | 254,056 |
| Population Density Km2: | auto |
The Mariupol uezd (; Ukrainian: Маріупольський повіт|Mariupol's'kyi povit) was one of the subdivisions of the Yekaterinoslav Governorate of the Russian Empire. It was situated in the southeastern part of the governorate. Its administrative centre was Mariupol.
At the time of the Russian Empire Census of 1897, Mariupolsky Uyezd had a population of 254,056. Of these, 46.1% spoke Ukrainian, 19.0% Greek, 14.0% Russian, 7.5% German, 6.1% Tatar, 4.1% Yiddish, 2.1% Turkish, 0.7% Belarusian and 0.2% Polish as their native language.[1]