| Conventional Long Name: | Masovian Governorate |
| Native Name: | Мазовецкая губерния |
| Nation: | Congress Poland |
| Subdivision: | Governorate |
| Event Start: | Establishment |
| Date Start: | 7 March |
| Year Start: | 1837 |
| Event End: | Incorporation into the Warsaw Governorate |
| Date End: | 31 December |
| Year End: | 1844 |
| Life Span: | 1837–1844 |
| P1: | Masovian Voivodeship (1816–1837)Masovian Voivodeship |
| Flag P1: | KP województwo mazowieckie COA.svg |
| Border P1: | no |
| S1: | Warsaw Governorate |
| Flag S1: | Coat of Arms of Warsawa gubernia (Russian empire).png |
| Border S1: | no |
| Capital: | Warsaw |
| Membership Title1: | Country |
| Membership1: | Congress Poland |
Masovia Governorate was an administrative-territorial unit (guberniya) of Congress Poland of the Russian Empire, which existed from 1837 to 1844, with its capital in Warsaw.
It was established on 7 March 1837, replacing the Masovian Voivodeship,[1] and existed until 31 December 1844, when it was merged with the Kalisz Governorate, forming the Warsaw Governorate on 1 January 1845.[2]