Fontan may refer to:
Geography Fontan, Alpes-Maritimes - a village and commune in southern France
Medicine Fontan procedure - an operation performed on the heart of those with some forms of congenital heart disease
People Élodie Fontan – French actress Francis Fontan – French cardiothoracic surgeon who first performed the Fontan procedure François Fontan – French politician Osni Fontan – Brazilian footballer Victor Fontan – French cyclist