Resaca is an unincorporated community in Monroe Township, Madison County, Ohio, United States. It is located at the intersection of Finley Guy Road and Woods and W Avenue.

Resaca was never platted, but the Resaca Post Office was established on March 16, 1887. In 1915, the community had two general stores, one blacksmith, one physician, a poolroom and a population of 30. The post office was discontinued on December 15, 1905. The mail service is now sent through the Plain City branch.