Ohio Rev. Code Ann. § 2335.09

Whenever, in any criminal proceeding or prosecution for the violation of an ordinance, or in a hearing before a coroner, an interpreter is necessary, the judge, magistrate, or coroner may appoint interpreters, who shall receive fees as witnesses in the case or proceeding. Such fees shall be taxed and paid as provided by sections 2335.05 to 2335.08 of the Revised Code for other witness fees. If the party taxed with costs is indigent, interpreter's fees shall not be taxed as costs, and the county or, if the court is a municipal court that is not a county-operated municipal court, the municipal corporation in which the court is located shall pay the interpreter's fees. This section shall not apply if, by law, an interpreter is otherwise provided.