Oñate is a Basque surname. Notable people with this surname include:
Cristóbal de Oñate (1504–1567), Spanish conquistador, father of Juan de Oñate Juan de Oñate (1550–1626), New Spanish explorer and colonial governor Jorge Oñate (1949–2021), Colombian singer and composer Santiago Oñate Laborde (born 1949), Mexican lawyer and politician Santiago Oñate (born 1951), Chilean footballer Eugenio Oñate Ibañez de Navarra (born 1953), Spanish engineer