Jefferson Township is one of nine townships in Whitley County, Indiana, United States.

As of the 2020 census, its population was 2,232 (up from 2,182 at 2010[3]) and it contained 905 housing units.

According to the 2010 census, the township has a total area of 35.08 square miles (90.9 km2), all land.

[3] (This list is based on USGS data and may include former settlements.)

The township contains two cemeteries: Bayliss and Broxon.