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

[3] The unincorporated community of Darboy is located in the town.

As of the census of 2010, the population density was 440.5 people per square mile (170.1/km2).

The racial makeup of the town was 94.4% White, 3.4% Hispanic or Latino, 0.7% from two or more races and 0.4% Asian.

Wisconsin International Raceway is located on County Road KK, East of Highway 55 in the town of Buchanan.