Berthou is a surname, and may refer to:
Gwilherm Berthou (1908–1951), Breton nationalist terrorist and neo-Druidic bardic poet Erwan Berthou (1861–1933), French and Breton language poet, writer and neo-Druidic bard Éric Berthou (born 1980), French road bicycle racer Jacques Berthou (born 1940), French politician Patrick Berthou (born 1963), French rower