Mentor is a town in Clark County in the U.S. state of Wisconsin.

As of the census[2] of 2000, there were 570 people, 223 households, and 165 families residing in the town.

There were 286 housing units at an average density of 8.0 per square mile (3.1/km2).

There were 223 households, out of which 30.5% had children under the age of 18 living with them, 61.9% were married couples living together, 6.7% had a female householder with no husband present, and 26.0% were non-families.

22.4% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older.