Vincennes Township is one of ten townships in Knox County, Indiana. As of the 2020 census, its population was 21,899 (down from 23,707 at 2010) and it contained 10,087 housing units.
According to the 2010 census, the township has a total area of , of which (or 97.31%) is land and (or 2.69%) is water.
It is in the Vincennes Community School Corporation.