Beauharnois may refer to: An alternative spelling of French House of Beauharnais
Canada Members of the House of Beauharnais Charles de la Boische, Marquis de Beauharnois (1670–1749), Governor General of North-American New France (fr: Nouvelle-France); places carrying his name, including: Beauharnois, Quebec and Fort Beauharnois, Minnesota Claude de Beauharnois de Beaumont et de Villechauve (1674–1738), French naval officer François de Beauharnois de la Chaussaye, Baron de Beauville (1660s–1746), French naval and colonial administrator in France and in New France (Nouvelle-France)
Places Beauharnois (federal electoral district) Beauharnois (Province of Canada electoral district) Beauharnois (provincial electoral district) Beauharnois, Quebec Beauharnois Canal Fort Beauharnois Beauharnois—Laprairie Beauharnois—Salaberry Beauharnois-Salaberry Regional County Municipality, Quebec
Other Battle of Beauharnois Beauharnois scandal - Canadian Flower-class corvette BHS, an OVH datacenter in the city of Beauharnois, south of Montreal, Canada Beauharnois Hydroelectric Power Station
United States Fort Beauharnois, Minnesota