Starcrash (Italian: Scontri stellari oltre la terza dimensione, lit. 'Starfights Beyond the Third Dimension') is a 1978 space opera film directed and co-written by Luigi Cozzi, and starring Marjoe Gortner, Caroline Munro, David Hasselhoff, Joe Spinell and Christopher Plummer.

Widely regarded as a "cash-in" on the unprecedented success of Star Wars, the film was an international co-production between Italy and the United States. Filmed at Cinecittà studios in Rome, the film was produced independently by the father-and-son duo of Nat and Patrick Wachsburger. It features a musical score composed by John Barry.

Released by New World Pictures on December 10, 1978, it received generally negative reviews from critics, but has developed a cult following. The film was riffed on by Mystery Science Theater 3000 in the first reboot season.