Quillota, a town of Chile in the province of Valparaiso, on the left bank of the Aconcagua river, 20 m. above its mouth and 26 m. E.N.E. of the city of Valparaiso. Pop. (1902 estimate) 9876. The valley is noted for its beauty, fertility, and healthfulness, and is the centre of thriving fruit and wine industries. Among its fruits is the "chirimoya" (Anona cherimolia). There are rich copper mines in the vicinity. Quillota is situated on a railway between Valparaiso and Santiago, which passes through a mountainous, semi-barren country. It is one of the oldest towns of Chile, dating from the first years of the conquest.