Harmony is a city in Fillmore County, Minnesota, United States. The population was 1,020 at the 2010 census. The town bills itself as the "Biggest Little Town in Southern Minnesota" and features the largest Amish community in the state.

Fillmore County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 21,228. Its county seat is Preston. Fillmore County is included in the Rochester metropolitan area.