Chapeau is a village in the Canadian province of Quebec, located along the Culbute Channel of the Ottawa River in the municipality of L'Isle-aux-Allumettes in Pontiac Regional County Municipality. There is speculation as to the real origin of the name "Chapeau" (French for "hat"). It has been hypothesized that geography of the village vaguely resembles the shape of a hat with three flat edges. Or the name may come from a rock in the Ottawa River in the form of a French military headgear. According to other sources, Chapeau recalls a bizarre hairdo of a Native American chief. It may also come from the French surnames Chappeau and Chapeau, common in the time of New France. However, none of these explanations may be regarded as final.