Warren Township is one of fourteen townships in Bremer County, Iowa, USA.

At the 2010 census, its population was 561.

[3] Warren Township covers an area of 36.66 square miles (94.9 km2) and contains no incorporated settlements.

According to the USGS, it contains three cemeteries: County Farm, Warren and Warren Evangelical.

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