Mathieu is both a surname and a given name. Notable people with the name include:
André Mathieu (1929–1968), Canadian pianist and composer
Anselme Mathieu (1828–1895), French Provençal poet
Claude-Louis Mathieu (1783–1875), French mathematician and astronomer
Émile Léonard Mathieu (1835–1890), French mathematician
Gail D. Mathieu, United States ambassador to Namibia
Georges Mathieu (1921–2012), French painter
Jérémy Mathieu (born 1983), French football player
Luc Mathieu (born 1972), French journalist
Michel Mathieu (disambiguation), multiple people, including:
Michel Mathieu (Canadian politician) (1838–1916), Canadian politician
Michel Mathieu (French politician) (1944–2010), French diplomat
Mireille Mathieu (born 1946), French singer
Paul-Henri Mathieu (born 1982), French tennis player
Simonne Mathieu (1908–1980), French tennis player
Tyrann Mathieu (born 1992), American football player
W. A. Mathieu (born 1937), composer, musician, and educator
Mathieu Amalric (born 1965), French actor and filmmaker
Mathieu Beaudoin (born 1984), Canadian ice hockey player
Mathieu Beaudoin (Canadian football) (born 1974), Canadian football player
Mathieu Biron (born 1980), Canadian hockey defenceman
Mathieu Bois (born 1988), Canadian breaststroke swimmer
Mathieu Debuchy (born 1985), French footballer
Mathieu Flamini (born 1984), French football player
Mathieu Kassovitz (born 1967), French director, screenwriter, producer, editor, and acto
Mathieu Kérékou (born 1933), President of Benin
Mathieu Lafon (born 1984), French football player
Mathieu Ladagnous (born 1984), French road racing cyclist
Mathieu Lemay, Canadian politician in Quebec
Mathieu Montcourt (1985–2009), French tennis player
Mathieu de Montmorency (1767–1826), French statesman during the French Revolution
Mathieu Orfila (1787–1853), Spanish-born French toxicologist and chemist
Mathieu Raynal (born 1981) French rugby union referee
Mathieu Schneider (born 1969), American hockey defenseman
Mathieu Valbuena (born 1984), French football player
Mathieu Wikipedia (Text) CC BY-SA