RSN Racing & Sport (ACMA callsign: 3UZ) is an Australian radio station in Australia. Owned and operated by thoroughbred, harness and greyhound racing bodies of Victoria, it broadcasts a sports radio format to Melbourne, and to much of Victoria through various repeater stations. First broadcast as 3UZ on 8 March 1925, it was in 1986 sold to the state's racing bodies. Today, the majority of the station's programming is dedicated to coverage of thoroughbred, harness and greyhound racing.