Franklin Township is one of the eleven townships of Warren County, Ohio, and is one of the original four townships in the county, dating back to 1803. The township is located in the northwest corner of the county, and is the most populous township in the county. The township is governed by three-member board of trustees, all elected at large, and are accompanied by an elected fiscal officer. Most of the township is located within the Franklin City and Carlisle City School Districts, but parts are in the Springboro City and Middletown City School Districts.