Olmué is a Chilean town and commune located in the Marga Marga Province, Valparaíso Region. The commune spans an area of 231.8 km2. Olmué is located 42.8 miles northwest of Santiago and 42 kilometers east northeast of Valparaíso. Olmué is the site of the Olmué Festival, a folk music contest held the 3rd week of January each year.