Gagné and Gagne are two distinct French surnames. The name Gagné is more common in France, Gagne is also the name of three minor French rivers.
People with the surname Gagné include:
Arsène Gagné (1910 - 1964), Canadian politician
Éric Gagné (born 1976), Canadian baseball player
Jean Gagné, Canadian wrestler
Marie-Pierre Gagné, Canadian synchronized swimmer
Michel Gagné, Canadian cartoonist
Robert M. Gagné (1916-2002), American educational psychologist
Simon Gagné, Canadian hockey player
Greg Gagne (baseball player) (born 1961: family name pronounced GAG-nee) American baseball player
People with the surname Gagne include:
Paulin Gagne, French poet, writer, eccentric
Greg Gagne (wrestler) (born 1948: family name pronounced GON-yuh) American wrestler
Verne Gagne (1926 - 2015), American wrestler and wrestling promoter; also father of wrestler Greg Gagne