Jackson Township is a township in Crittenden County, Arkansas, United States. Its total population was 1,352 as of the 2010 United States census, a decrease of 1.24 percent from 1,369 at the 2000 census.
According to the 2010 Census, Jackson Township is located at (35.206155, -90.334483). It has a total area of ; all of which is land. As per the USGS National Elevation Dataset, the elevation is .
Crawfordsville, and parts of Marion, West Memphis, and Jennette are located within the township.