The Alytus District Municipality (Lithuanian: Alytaus rajono savivaldybė) is a municipality in Alytus County, Lithuania, located in the Dzūkija ethnographic region.

This municipality was founded in 1950, and until 1953 was a part of the Kaunas Province.

The current coat of arms of the Alytus district municipality was announced by Lithuanian presidential decree on August 7, 2001.

Alytus District Municipality has 72 archeological, 395 historical, 144 art, 29 architectural and 3 urbanistic monuments, as well as 19 hillforts.

Neman flows northwards through the district, as well as its tributaries Bambena, Peršėkė and Varėnė.