Wesley Township is one of the twenty-two townships of Washington County, Ohio, United States.

The 2020 census found 952 people in the township.

Located in the far western part of the county, it borders the following townships: No municipalities are located in Wesley Township, although the unincorporated community of Bartlett lies in the township's center.

[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.