Joseph Lafontaine is the name of:
- Joseph Lafontaine (Shefford MLA) (1839–1904), notary, mayor and politician in Quebec
- Joseph Lafontaine (Berthier MLA) (1865–1920), farmer, mayor and politician in Quebec
- Joseph Lafontaine (Quebec MP) (1885–1965), merchant and member of the Canadian House of Commons from Quebec
This disambiguation page lists articles about people with the same name.
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