Walnut Township is a township in Atchison County, Kansas, United States.

[1] Walnut Township covers an area of 37.2 square miles (96.4 km2) and contains no incorporated settlements.

According to the USGS, it contains three cemeteries: Mount Gillian, Sapp and Sumner.

The streams of Little Walnut Creek, Owl Creek and Walnut Creek run through this township.

This article about a location in Atchison County, Kansas is a stub.