Descoteaux is a surname. Notable people with the surname include:
Bernard Descôteaux (born 1947), Canadian journalist Joseph-Félix Descôteaux (1863–1931), Canadian politician Matthieu Descoteaux (born 1977), Canadian ice hockey player Norm Descoteaux (born 1948), Canadian ice hockey player Pierre Descoteaux (born 1952), Canadian lawyer and politician
See also Descôteaux v Mierzwinski, a Supreme Court of Canada case Decoteau (disambiguation)