Leon is a city in Decatur County, Iowa, United States. The population was 1,983 at the 2000 census. It is the county seat of Decatur County.
The city is located near the Little River Lake Recreation Area. Leon is home to a major rodeo that has been Rodeo of the Year in Iowa for many years.
Leon is located at 40°44′24″N 93°44′47″W / 40.74°N 93.74639°W / 40.74; -93.74639 (40.739924, -93.746342).