Winfield Township is a township in Scott County, Iowa, USA.

Winfield Township covers an area of 32.78 square miles (84.9 km2) and contains one incorporated settlement, Long Grove.

According to the USGS, it contains two cemeteries: Long Grove Christian Church and Saint Anns Catholic.

The stream of Mason Creek runs through this township.

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