XXX is the thirteenth studio album by the Americanblues rock band ZZ Top, released in 1999. The album's title is a reference to it being thirty years since the band was formed. The live track, "Sinpusher", is an altered version of their 1994 song "Pincushion" with different lyrics and a slightly heavier guitar riff. The album peaked at number 100 on the Billboard 200. It was their first album without Bill Ham at the helm as producer.
Allmusic only gave the album one and a half stars, and in its review by Stephen Thomas Erlewine, he states: "After all, countless blues-based musicians, from Lightnin' Hopkins and Muddy Waters to B.B. King and The Rolling Stones, have aged gracefully, albeit in varying degrees. So why does ZZ Top sound so stiff and useless on XXX, a record celebrating their 30th anniversary? Part of that could be that the songwriting is decidedly weak, but a band as seasoned as ZZ Top should be able to make third-rate material at least listenable."