Mentor-on-the-Lake is a city in Lake County, Ohio, United States.

Originally part of Mentor Township, the village was established October 22, 1924.

The U.S. Census for 1970 recorded the official population as being over 5,000 and thus it became an incorporated city on February 12, 1971.

[5] A vast majority of the land that comprises Mentor-On-The-Lake was originally owned and deeded as the Dickey-Moore tract and extended all the way south beyond U.S. Route 20 in the city of Mentor.

A remnant of this era is a property known as Mooreland which was once owned by the Moore family and is situated on land that now houses Lakeland Community College.

[4] 18.3% were of German, 16.3% Irish, 14.0% Italian, 7.7% Polish, 7.4% English and 6.2% American ancestry according to Census 2000.

The City Council consists of seven members, who are elected for four-year terms.

As of 2024, the members of the City Council are as follows:[12] Residents in Mentor-on-the-Lake are zoned to Mentor Public Schools.