Frindsbury, sometimes called Frinsbury, is part of the Medway Towns conurbation in Kent, southern England. It lies on the opposite side of the River Medway to Rochester, and at various times in its history has been considered fully or partially part of the City of Rochester. Frindsbury refers to both a parish and a manor. Within the civil parish of Frindsbury Extra are the villages of Frindsbury, Wainscott, and Upnor. Frindsbury was also the name given to an electoral ward in the City of Rochester that straddled the parishes of Frindsbury and Strood.
Frindsbury started as a small agricultural community, grew into a significant industrial centre and declined into a dormitory suburb, each generation erasing the traces of the previous.