Tsumadinsky District (Russian: Цумади́нский райо́н, translit. Tsumadínsky rayón; Avar: Цӏумада мухъ, translit. Ⱬumada muӿ) is an administrative and municipal district (), one of the forty-one in the Republic of Dagestan, Russia.It is located in the west of the republic. The area of the district is 1,100 square kilometers (420 sq mi).