Beauharnois-Salaberry (French pronunciation: [boaʁnwa salabɛʁi]) is a regional county municipality in the Montérégie region of Quebec, Canada.

Its seat is Beauharnois.

[2] The RCM was formed by combining the historic counties of Beauharnois and Châteauguay.

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[9]

Protected areas: