Rush Creek Township is one of the thirteen townships of Fairfield County, Ohio, United States.

Located in the southeastern corner of the county, it borders the following townships: The village of Bremen is located in central Rush Creek Township, and part of the census-designated place of Hide-A-Way Hills lies in the township's south.

[4] It is the only Rush Creek Township statewide, although there is a Rushcreek Township in Logan County.

[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.