What is the best selling album of all time?

Michael Jackson's Thriller, with around 110 million copies sold (more than double the nearest rival), is the best selling album of all time to date.

Although Thriller is one of the best selling albums of all time, it is the best selling STUDIO album. The best selling album of all time and best selling album by a group is the Eagles - Greatest Hits (1971 - 1975), although Thriller and The Eagles greatest hits both went 29 times platinum.