Momsky District (Russian: Момский улу́с; Sakha: Муома улууһа) is an administrative and municipal district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia. It is located in the northeast of the republic. The area of the district is 104,600 square kilometers (40,400 sq mi). Its administrative center is the rural locality (a selo) of Khonuu. Population: 4,452 (2010 Census); 4,699 (2002 Census); 5,505 (1989 Census).