Thunder Seven is the seventh studio album by Canadian hard rock band Triumph, released in November 1984. Three songs on the second half of the album follow a concept based on time-related themes.

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.

"Follow Your Heart" was the band's highest-charting single of the time, reaching #88 in both the UK and the US. It reached number 35 on the Canada pop chart. The video that was shot to accompany the single was filmed live at the Providence Civic Center in Rhode Island. During the concert, the band announced they would be filming a video after the concert and the audience were free to stay around. "Spellbound" was also released as a single, though it did not prove as successful, only charting in Canada and barely scraping the top 100.

Thunder Seven was the last Triumph album that did not feature any outside writers. 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.

All tracks written by Gil Moore, Mike Levine and Rik Emmett, except where noted.

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