Lessor is a town in Shawano County, Wisconsin, United States.

The unincorporated communities of Briarton and Landstad are located in the town.

The unincorporated community of Frazer Corners is also partially located in the town.

The racial makeup of the town was 98.83% White, 0.72% Native American, 0.09% Asian, and 0.36% from two or more races.

16.1% of all households were made up of individuals, and 6.6% had someone living alone who was 65 years of age or older.