Julio Jorge Olarticoechea (born 18 October 1958) is an Argentine former footballer who played as a defender. At international level, he represented Argentina at the 1986 and the 1990 World Cups, winning the former edition of the tournament. Olarticoechea and Diego Maradona were roommates in Mexico at the 1986 World Cup.
Olarticoechea played for Argentinos Juniors, Deportivo Mandiyú, River Plate, Boca Juniors and Racing Club in the Argentinian League as well as for FC Nantes in the French League. He was manager in Talleres de Remedios de Escalada, Argentina.
Olarticoechea's home town of Saladillo, Buenos Aires, installed a roadside monument honoring his football career.