Union Township is one of eleven townships in Howard County, Indiana, United States. As of the 2020 census, its population was 1,012, down from 1,029 in 2010.
Union Township was organized in 1853.
According to the 2010 census, the township has a total area of , of which (or 99.88%) is land and (or 0.12%) is water.
(This list is based on USGS data and may include former settlements.)
The township contains three cemeteries: Jerome, New Hope and Union Civil.