Thunder Seven is the seventh studio album by Canadian hard rock band Triumph, released in November 1984.

The album was certified gold in the US by the RIAA, with sales of over 500,000 copies, on April 21, 2003, almost nineteen years after its initial release.

"Spellbound" was also released as a single, though it did not prove as successful, only charting in Canada and barely scraping the top 100.

All prior Triumph albums, with the exception of 1977's Rock & Roll Machine, were written entirely by the band members.

The album cover is illustrated by artist Dean Motter and is a mechanized version of the Vitruvian Man by Leonardo da Vinci.