Ontario is a town in the northwest corner of Wayne County, New York, United States. The population was 9,778 at the 2000 census, and 10,136 at the 2010 census. The town is named after the Great Lake on its northern border.

Wayne County is a county in the U.S. state of New York. As of the 2020 Census, the population was 91,283. The county seat is Lyons. The name honors General Anthony Wayne, an American Revolutionary War hero and American statesman. The county is part of the Finger Lakes region of the state.