Lahaie is a French surname. Notable people with the surname include:
Brigitte Lahaie (born 1955), French radio talk show host and actress Félix Lahaie (1767–1829), French gardener Ivan LaHaie, American electrical engineer Marcelin L. Lahaie (1913–1973), Canadian officer
See also Kim Lahaie Richards, American drag racer and crew chief Lahaye