Jackson Township is one of the fifteen townships of Ashland County, Ohio, United States.

[3] Located in the northeastern part of the county, it borders the following townships: The village of Polk is located in western Jackson Township, and the census-designated place of Cinnamon Lake, built around a reservoir of the same name, lies in the township's north.

[4] It is one of thirty-seven Jackson Townships statewide.

[5] The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.

There is also an elected township fiscal officer,[6] who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election.