Iroquois Township is one of ten townships in Newton County, Indiana, United States. As of the 2020 census, its population was 1,250 and it contained 530 housing units.
The George Ade House was listed on the National Register of Historic Places in 1976.
According to the 2010 census, the township has a total area of , of which (or 99.76%) is land and (or 0.24%) is water.
(This list is based on USGS data and may include former settlements.)
Iroquois Township is served by the Brook-Iroquois Township Public Library.