Vachon may refer to:
In people:
- members of the Canadian professional wrestling Vachon family:
- Luna Vachon (1962-2010), ring name of professional wrestler Gertrude Vachon
- Maurice Vachon (born 1929), retired Canadian professional wrestler, known by his ring name "Mad Dog" Vachon
- Paul Vachon (born 1938), former professional wrestler
- Vivian Vachon (1951-1991), female professional wrestler
- Auguste Vachon, Canadian officer of arms
- Christine Vachon (born 1962), American movie producer
- François Vachon de Belmont (1645-1732), fifth superior of the Montreal Sulpicians
- Jean Vachon, American silent film actress
- John Vachon (1914-1975), American photographer
- Louis-Albert Vachon (1912-2006), cardinal of the Roman Catholic Church, and Archbishop Emeritus of Quebec
- Nicholas Vachon (born 1972), Canadian ice hockey player
- Pierre Vachon (1731-1803), French classical composer
- Rogatien Vachon (born 1945), Canadian ice hockey goaltender
- Javier Vachon, character from the television series Forever Knight
In other:
- Vachon (electoral district), a provincial riding in Quebec
- Vachon Inc., Canadian maker of snack pastries
- Vachon River, a river in Nunavik, Quebec, Canada