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

The unincorporated community of Isaar, Wisconsin is also located in the town.

As of the census of 2000, there were 1,216 people, 406 households, and 347 families residing in the town.

11.6% of all households were made up of individuals, and 4.9% had someone living alone who was 65 years of age or older.

Out of the total people living in poverty, 3.0% are under the age of 18 and 4.6% are 65 or older.