Cantin is a French surname common in Canada. It may refer to the following people:
- Narcisse Cantin (1870–1940), founder of Johnson's Mills, a failed planned community in Ontario, Canada
- Jean-Charles Cantin (1918–2005), Canadian politician
- Marc Cantin (1933–1990), Canadian physician and professor
- Paolo Fernandes Cantin
- Serge Cantin (b. 1945), Canadian bobsledder
- Jean Pierre Cantin (b. 1966), Canadian judoka
- Sylvie Cantin (b. 1970), Canadian speed skater
- Dave Cantin (b. 1979), American entrepreneur
- Geoffrey Cantin-Arku (born 1998), Canadian football player