Thunderball is the ninth studio album by German heavy metal band U.D.O.

After their previous studio album, U.D.O.

had released the DVD Nailed to Metal and an accompanying live CD titled Nailed to Metal: The Missing Tracks in 2003.

The title of this album and Udo Dirkschneider's posture on the cover are allusions to the 1965 film Thunderball.