Westfield Township is one of twenty townships in Fayette County, Iowa, USA.

[1] According to the United States Census Bureau, Westfield Township covers an area of 35.4 square miles (91.7 square kilometers); of this, 35.15 square miles (91.05 square kilometers, 99.29 percent) is land and 0.25 square miles (0.65 square kilometers, 0.71 percent) is water.

The city of Fayette is entirely within this township geographically but is a separate entity.

(This list is based on USGS data and may include former settlements.)

The township contains these three cemeteries: Lima, Pleasant Hill and Saint Francis.