| Official Name: | Union Prairie Township, Allamakee County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Allamakee |
| Area Total Km2: | 91.68 |
| Area Land Km2: | 91.68 |
| Area Water Km2: | 0 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.4 |
| Area Land Sq Mi: | 35.4 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2010 |
| Population Total: | 761 |
| Population Density Km2: | 8.3 |
| Population Density Sq Mi: | 21.5 |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Footnotes: | [1] |
| Elevation M: | 377 |
| Elevation Ft: | 1237 |
| Coordinates: | 43.3033°N -91.5581°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-94293[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0468849 |
Union Prairie Township is one of eighteen townships in Allamakee County, Iowa, USA. At the 2010 census, its population was 761.[3]
Union Prairie Township was organized in 1852.[4]
Union Prairie Township covers an area of 35.4sqmi and contains no incorporated settlements. According to the USGS, it contains three cemeteries: Eells Plot, Mount Olivet and West Ridge.