Larsen is an unincorporated community in the town of Clayton, in Winnebago County, Wisconsin, United States.
A post office called Larsen has been in operation since 1898. The community was named for Philip Larsen, the first storekeeper there.
St Peter's Lutheran Church is a Christian church of the Wisconsin Evangelical Lutheran Synod in Larsen.
The Larson Brothers Airport is located near Larsen.