Spring Valley Township is a township in Dallas County, Iowa, USA.

Spring Valley Township covers an area of 35.79 square miles (92.7 km2) 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.

This article about the geography of Dallas County, Iowa is a stub.