ebRS is a specification for a business & service registry. It was developed by OASIS as part of the ebXML group of specifications. ebRS is designed to hold Collaborative Protocol Profiles and Agreements. This enables businesses to query the registry to find appropriate trading partners.

EbRS has significant overlap with UDDI. At the moment, ebRS is the preferred registry for ebXML users, while UDDI is the preferred registry for web services as specified by WS-I.