which band sold the most albums of all time?

The Beatles.

Perhaps unsurprisingly, British rock band The Beatles are top of the list for best-selling artists worldwide, with 183 million units certified sales.

The Beatles were an English rock band, formed in Liverpool in 1960, that comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are regarded as the most influential band of all time and were integral to the development of 1960s counterculture and popular music's recognition as an art form.