Seymour is a town in Lafayette County, Wisconsin, United States.

The unincorporated community of Seymour Corners is located in the town.

According to the United States Census Bureau, the town of Seymour has a total area of 36.1 square miles (93.6 km2), all of it land.

There were 122 housing units at an average density of 3.4 per square mile (1.3/km2).

16.1% of all households were made up of individuals, and 5.1% had someone living alone who was 65 years of age or older.