Waterloo Township is one of eighteen townships in Allamakee County, Iowa, USA.

[4] Waterloo Township covers an area of 30.07 square miles (77.9 km2) and contains no incorporated settlements.

It contains the unincorporated community of Dorchester.

According to the USGS, it contains four cemeteries: Saint Johns, Saint Marys, Waterloo Ridge and West Waterloo Ridge.

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