20 All-Time Greatest Hits! is a compilation album by James Brown containing 20 of his most famous recordings. Released by Polydor in 1991 as a single-disc alternative to the Star Time four-CD box set, it features 20 songs recorded between 1956 and 1976. Sixteen of the songs from the album had previously topped the US R&B charts. The album itself peaked at number 99 on the R&B/Hip-Hop Albums chart after its release. Europe and the UK received an alternate release to promote Star Time, Sex Machine: The Very Best of James Brown.