Oiartzun Kirol Elkartea is a Spanish football club from Oiartzun, Gipuzkoa, founded in 1975. It is best known for its women's section, established in 1981. Oiartzun was one of the leading teams in the first years of organized women's football in Spain, winning the national championship in 1987 and 1988 and the national league in 1991.