Gates Mills is a village in eastern Cuyahoga County, Ohio, United States.

Gates Mills was originally part of Mayfield Township.

The village was named for Halsey Gates, the proprietor of a local watermill.

There were 974 housing units at an average density of 107.1 per square mile (41.4/km2).

16.8% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older.

21.7% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older.

One private school, Gilmour Academy, is located in Gates Mills.