Casares is a surname. Notable people with the surname include:
Adolfo Bioy Casares (1914–1999), Argentine fiction writer Ana Casares (died 2007), Polish-American actress Carlos Casares (governor) (1830–1883), Argentine rancher, executive, and politician Carlos Casares (writer) (1941–2002), Spanish Galician language writer Daniel Casares (born 1980), Spanish flamenco guitarist and composer Julio Casares (born 1961), Brazilian creative director and football chairman María Casares (1922–1996), French actress, daughter of Santiago Casares Quiroga Olga Casares Pearson (1896–1980), Argentine actress Orlando Casares, Argentine football coach Oscar Casares (born 1964). American writer and professor of creative writing Rick Casares (1931–2013), American footballer Roberto Casares (born 1964), Spanish table tennis player Santiago Casares Quiroga (1884–1950), Spanish politician who was Prime Minister of Spain when the Civil War broke out Viola Casares (born 1944), Mexican labor activist Wenceslao Casares (born 1974), Argentine businessman