U
- Udell Township, Appanoose County
- Ulster Township, Floyd County
- Union Township, Adair County
- Union Township, Adams County
- Union Township, Appanoose County
- Union Township, Benton County
- Union Township, Black Hawk County
- Union Township, Boone County
- Union Township, Calhoun County
- Union Township, Carroll County
- Union Township, Cass County
- Union Township, Cerro Gordo County
- Union Township, Crawford County
- Union Township, Dallas County
- Union Township, Davis County
- Union Township, Delaware County
- Union Township, Des Moines County
- Union Township, Fayette County
- Union Township, Floyd County
- Union Township, Guthrie County
- Union Township, Hardin County
- Union Township, Harrison County
- Union Township, Jackson County
- Union Township, Johnson County
- Union Township, Kossuth County
- Union Township, Louisa County
- Union Township, Lucas County
- Union Township, Madison County
- Union Township, Mahaska County
- Union Township, Marion County
- Union Township, Mitchell County
- Union Township, Monroe County
- Union Township, O'Brien County
- Union Township, Plymouth County
- Union Township, Polk County
- Union Township, Poweshiek County
- Union Township, Ringgold County
- Union Township, Shelby County
- Union Township, Story County
- Union Township, Union County
- Union Township, Van Buren County
- Union Township, Warren County
- Union Township, Wayne County
- Union Township, Woodbury County
- Union Township, Worth County
- Union City Township, Allamakee County
- Union Prairie Township, Allamakee County
- Urbana Township, Monroe County
- Utica Township, Chickasaw County
Read more about this topic: List Of Iowa Townships