Green Township is one of the fifteen townships of Harrison County, Ohio, United States.

Located in the eastern part of the county, it borders the following townships: The village of Hopedale is located in northeastern Green Township, and the unincorporated community of Pittsburgh Junction lies in the western part of the township.

It is one of sixteen Green Townships statewide.

[4] 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,[5] 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.