Union Township is one of twelve townships in White County, Indiana, United States. As of the 2020 census, its population was 9,860 and it contained 5,082 housing units.
Union Township was organized in 1834.
According to the 2010 census, the township has a total area of , of which (or 95.12%) is land and (or 4.88%) is water.
(This list is based on USGS data and may include former settlements.)
The township contains these two cemeteries: Cutler and River View.
Union Township is served by the Monticello-Union Township Public Library.