The cast of Star Trek Beyond is offering one lucky fan the chance to land a walk-on part in the upcoming movie sequel.

The actors, including Chris Pine, Zoe Saldana and Zachary Quinto, have teamed up with fundraising website to launch the Star Trek: To Boldly Go campaign, and fans are encouraged to donate $US10 ($A13.55) to be in with a chance to win the once-in-a-lifetime opportunity.

The campaign was launched with a video starring the cast, including new member Idris Elba, explaining the project while walking through the starship Enterprise.

Speaking together in a joint message, they say, “One more thing, in addition to the grand prize, we’re selecting six more winners to form our honorary Star Trek: To Boldly Go crew. We’ll fly you out for an exclusive behind-the-scenes visit, you’ll take a tour of the ship, hang out with all of us and watch as we film new scenes.”

Funds raised will go to nine international charities personally selected by the cast.

The campaign starts this week and runs to September 1.

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