Caldwell Township is one of eighteen townships in Appanoose County, Iowa, United States.

As of the 2010 census, its population was 425.

[3] Caldwell Township covers an area of 38.63 square miles (100.1 km2) and contains one incorporated settlement, Exline.

According to the USGS, it contains five cemeteries: Hism, New Hope, Salem, Union and Zoar.

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