| Official Name: | Richland Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Decatur |
| Area Total Km2: | 92.67 |
| Area Land Km2: | 92.56 |
| Area Water Km2: | 0.1 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.78 |
| Area Land Sq Mi: | 35.74 |
| Area Water Sq Mi: | 0.04 |
| Area Water Percent: | 0.11 |
| Population As Of: | 2000 |
| Population Total: | 394 |
| Population Density Km2: | 4.3 |
| Population Density Sq Mi: | 11 |
| Elevation M: | 299 |
| Elevation Ft: | 981 |
| Coordinates: | 40.8556°N -93.9539°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468601 |
Richland Township is a township in Decatur County, Iowa, United States. As of the 2000 census, its population was 394.
Richland Township covers an area of 35.78 square miles (92.67 square kilometers); of this, 0.04 square miles (0.1 square kilometers) or 0.11 percent is water. The stream of Sand Creek runs through this township.
The township contains six cemeteries: Grand River, O'Grady, Tennessee, Warrick, Westervelt and Young.