ABBA Gold: Greatest Hits is a compilation album of recordings by Swedish pop group ABBA. It was released on September 21, 1992 through PolyGram, the first compilation to be released after the company had acquired Polar Music and thus the rights to the ABBA back catalogue. In 1998, PolyGram was in turn merged into what is now the Universal Music Group. With sales in excess of 28 million copies, it is the best-selling ABBA album as well as one of the best-selling albums worldwide.