Jackson Township is a township in Sharp County, Arkansas, United States. Its total population was 295 as of the 2010 United States census, a decrease of 9.51 percent from 326 at the 2000 census.
According to the 2010 Census, Jackson Township is located at (36.225564, -91.413279). It has a total area of ; of which is land and is water (0.74%). As per the USGS National Elevation Dataset, the elevation is .
The town of Williford is located within the township.