The Municipality of Mežica (pronounced [mɛˈʒiːtsa] ⓘ; Slovene: Občina Mežica) is a municipality in the traditional region of Carinthia in northern Slovenia.

The seat of the municipality is the town of Mežica.

Mežica became a municipality in 1994.

In addition to the municipal seat of Mežica, the municipality also includes the following settlements:

This article about the Municipality of Mežica in Slovenia is a stub.