Galarza is a Spanish surname. Notable people with the surname include:
Adrián Salvador Galarza González (born 1965), Mexican politicianAlma Galarza, Puerto Rican singerAna Galarza (born 1989), Ecuadorian beauty pageant winnerErnesto Galarza (1905–1984), Mexican-American labor activistJaime Galarza Zavala (born 1930), Ecuadorian writer, poet, journalist and politicianKenny Galarza (born 1985), Puerto Rican boxerMarcos Galarza (born 1984), Argentine footballerMariano Galarza (born 1986), Argentine rugby union playerSergio Galarza (born 1975), Bolivian footballerValentín Galarza Morante (1882–1951), Spanish politician