Iriondo is a surname. Notable people with the surname include: Antonio Iriondo (born 1953), former Spanish football player and manager Iban Iriondo (born 1984), Spanish professional road bicycle racer Josu Iriondo (born 1938), Spanish American prelate of the Roman Catholic Church Rafael Iriondo (1918–2016), former Spanish football player and manager Simón de Iriondo (1836–1883), Argentine politician of the National Autonomist Party
See also Iriondo Department, administrative subdivision of the province of Santa Fe, Argentina