Grant Township is one of ten townships in Newton County, Indiana, United States. As of the 2020 census, its population was 1,100 and it contained 513 housing units.
Grant Township was founded in 1865, and named for Ulysses S. Grant.
According to the 2010 census, the township has a total area of , all land.
(This list is based on USGS data and may include former settlements.)
The township contains these two cemeteries: Goodland and Mount Calvary.
Grant Township is served by the Goodland-Grant Township Public Library.