Knox Township is one of twelve townships in Jay County, Indiana, United States.

As of the 2020 census, its population was 477 (down from 503 at 2010[2]) and it contained 194 housing units.

It was named after Knox County, Ohio.

[3] According to the 2010 census, the township has a total area of 23.7 square miles (61 km2), all land.

The township contains one cemetery, Winters.