Jean Gagnon

Jean Gagnon may refer to:
 * Jean Gagnon (bishop) (1941–2016), Canadian Roman Catholic bishop
 * Jean Gagnon (curler) (born 1970), Canadian curler
 * Jean Gagnon (ice hockey) (born 1956), Canadian ice hockey player
 * Johnny Gagnon (Jean Joseph "Black Cat" Gagnon, 1905–1984), Canadian ice hockey player