Bethel Township is one of twenty townships in Fayette County, Iowa, United States.

As of the 2000 census, its population was 297.

[1] According to the United States Census Bureau, Bethel Township covers an area of 36.12 square miles (93.54 square kilometers); of this, 36.09 square miles (93.46 square kilometers, 99.91 percent) is land and 0.03 square miles (0.08 square kilometers, 0.09 percent) is water.

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

The township contains these three cemeteries: Bethel, Pitts and Richfield.