| Official Name: | Spring Valley Township, Greene County, Ohio |
| Settlement Type: | Township |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Greene |
| Unit Pref: | Imperial |
| Area Total Km2: | 89.6 |
| Area Land Km2: | 88.8 |
| Area Water Km2: | 0.8 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 2478 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Footnotes: | [2] |
| Elevation Ft: | 741 |
| Coordinates: | 39.6122°N -83.9997°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 45370 |
| Area Code: | 937 and 326 |
| Blank Name: | FIPS code |
| Blank Info: | 39-74223[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1086173 |
Spring Valley Township is one of twelve townships of Greene County, Ohio, United States. As of the 2020 census, the population was 2,478.
Located in the southwestern part of the county, it borders the following townships:
The village of Spring Valley is located in central Spring Valley Township.
The Little Miami River flows through Spring Valley Township.[4] At the point where the river crosses the county line into Warren County is located Greene County's lowest point, above sea level.[5]
Spring Valley Township was created in 1856.[6]
It is the only Spring Valley Township statewide.[7]
The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1. Two are elected in the year after the presidential election and one is elected in the year before it. There is also an elected township fiscal officer,[8] who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election. Vacancies in the fiscal officership or on the board of trustees are filled by the remaining trustees.