Vänersborg Municipality (Vänersborgs kommun) is a municipality in Västra Götaland County in western Sweden. Its seat is located in the city of Vänersborg.

The present municipality was created during the local government reform in the early 1970s. In 1971 the City of Vänersborg became a municipality of unitary type and three years later it was amalgamated with three surrounding municipalities. The number of original local government entities (as of 1863) is eight.

• Brålanda, 1,500 inhabitants
• Frändefors, 600
• Katrinedal, 300
• Nordkroken, 400
• Vargön, 5,000
• Vänersborg (seat), 22,000

This is a demographic table based on Vänersborg Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.^[3]

In total there were 39,574 residents, including 30,181 Swedish citizens of voting age.^[3] 47.4% voted for the left coalition and 51.3% for the right coalition. Indicators are in percentage points except population totals and income.