Marcellon is a town in Columbia County, Wisconsin, United States.

The unincorporated community of Belle Fountain is located in the town.

As of the census[2] of 2000, there were 1,024 people, 362 households, and 287 families residing in the town.

There were 380 housing units at an average density of 10.7 per square mile (4.1/km2).

15.7% of all households were made up of individuals, and 6.1% had someone living alone who was 65 years of age or older.