An apparatus and method for providing Remote User Interface (RUI) service are provided. The apparatus includes a service browser module and a virtual RUI server module. The service browser module communicates with a service registry, which is located outside a home network, and provides a service search User Interface (UI) to allow an RUI client, which is located inside a home network, to search for services that are present outside the home network. The virtual RUI server module is responsible for intermediation so that the services present outside the home network can be used through a service UI.