Mercury Records is an American record label owned by Universal Music Group. It had significant success as an independent operation in the 1940s and 1950s. Smash Records and Fontana Records were sub labels of Mercury. In the United States, it operated through Republic Records; in the United Kingdom, it was distributed by EMI Records.
Since the separation of Island Records, Motown, Mercury Records, and Def Jam Recordings combining the Island Def Jam Music Group, Mercury Records has been placed under Island Records, although its back catalogue is still owned by the Island Def Jam Music Group (now Island Records).