Lemvig Municipality (Danish: Lemvig Kommune) is a municipality (Danish, kommune) in Region Midtjylland on the west coast of the Jutland peninsula in west Denmark.

The municipality covers an area of 516.63 km2, and has a population of 19,110 (2024).

A significant part of its southern border is defined by the waters of Bøvling Fjord, Indfjorden and Nissum Fjord.

A string of islands define the western perimeter of the waters south of the municipality; some of these islands belong to the municipality, and others belong to its southern neighbor, Ulfborg-Vemb.

These waters at the municipality's southern border, encompassing the three fjords, plus Fejsted Kog is a national park.