Columbia Township is one of eleven townships in Jennings County, Indiana, United States. As of the 2020 census, its population was 920 (up from 868 at 2010) and it contained 406 housing units.
Columbia Township was established in 1817.
According to the 2010 census, the township has a total area of , of which (or 99.97%) is land and (or 0.05%) is water. The streams of Square Run and Wolf Creek run through this township.
The township contains three cemeteries: Cornell, Old Zenas, and Zenas.