Marion Township is one of the seventeen townships of Hancock County, Ohio, United States.

Located in the central part of the county, it borders the following municipalities: It is one of twelve Marion Townships statewide.

The township was probably named for Francis Marion, a general in the American Revolutionary War who was also known as the Swamp Fox.

[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.