Ust-Tsilemsky District (Russian: Усть-Ци́лемский райо́н; Komi: Чилимдiн район, Ćilimdïn rajon) is an administrative district (raion), one of the twelve in the Komi Republic, Russia.

The area of the district is 42,500 square kilometers (16,400 sq mi).

[2] Its administrative center is the rural locality (a selo) of Ust-Tsilma.

Within the framework of administrative divisions, Ust-Tsilemsky District is one of the twelve in the Komi Republic.

[1] The district is divided into ten selo administrative territories and one settlement administrative territory, which comprise thirty-seven rural localities.