| Official Name: | Spring Valley Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Dallas |
| Area Total Km2: | 92.7 |
| Area Land Km2: | 91.72 |
| Area Water Km2: | 0.99 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.79 |
| Area Land Sq Mi: | 35.41 |
| Area Water Sq Mi: | 0.38 |
| Area Water Percent: | 1.07 |
| Population As Of: | 2000 |
| Population Total: | 8204 |
| Population Density Km2: | 89.4 |
| Population Density Sq Mi: | 231.7 |
| Elevation M: | 284 |
| Elevation Ft: | 932 |
| Coordinates: | 41.8247°N -94.1064°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468745 |
Spring Valley Township is a township in Dallas County, Iowa, USA. As of the 2000 census, its population was 8,204.
Spring Valley Township covers an area of 35.79sqmi and contains one incorporated settlement, Perry. According to the USGS, it contains five cemeteries: Highview Memorial Gardens, Mowrer, Saint Patrick's, Valleyview and Violet Hill.
The streams of Bucks Branch, Elm Branch, Frog Creek and Swan Lake Branch run through this township.
Spring Valley Township contains one airport, Perry Municipal Airport.