The Municipality of Sevnica (Slovene: Občina Sevnica) is a municipality along the Sava and the Mirna Rivers in southeastern Slovenia.

The seat of the municipality is the town of Sevnica.

Today it is part of the Lower Sava Statistical Region.

It is the 12th-largest municipality by area in Slovenia.

[1] In addition to the municipal seat of Sevnica, the municipality also includes the following settlements: Notable people from the Municipality of Sevnica include the model Melanija Knavs (married Melania Trump), the handball player Matjaž Mlakar, the historian Janko Prunk (from Loka pri Zidanem Mostu), and the writer Ludvik Mrzel (also from Loka pri Zidanem Mostu).