Koldo is a male given name. Notable people with this name include: Koldo Aguirre (1939–2019), Spanish football player Koldo Álvarez, Andorran football player Koldo Fernández (born 1981), Spanish cyclist Koldo Gil (born 1978), Spanish cyclist Koldo Gorostiaga Atxalandabaso (born 1940), Spanish politician Koldo Izagirre (born 1953), Spanish writer Koldo Mitxelena (1915–1987) Koldo Serra, Spanish director Koldo Zuazo (born 1956), Basque linguist