Bengtsfors Municipality (Bengtsfors kommun) is a municipality in Västra Götaland County in western Sweden. Its seat is located in the town of Bengtsfors.

The present municipality was formed in 1971 when the former market town (köping) of Bengtsfors (instituted in 1926) was amalgamated with the municipalities of Bäckefors, Lelång and Steneby.

The municipality has much water areas, consisting of lakes and streams. It makes it a good place for canoeing, fishing and bathing.

Every year a canoeing marathon called Dalslands Kanot Marathon+, or DKM+, is held. It is an enduring 55 km long (a marathon "plus"), stretching through the many municipal streams, and one of Sweden's largest canoeing competitions.

Bengtsfors is also crossed by the Dalsland Canal.

This is a demographic table based on Bengtsfors 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 9,389 residents, including 7,070 Swedish citizens of voting age.^[3] 46.3% voted for the left coalition and 52.9% for the right coalition. Indicators are in percentage points except population totals and income.