Mobile Suit Crossbone Gundam (機動戦士クロスボーン・ガンダム, Kidō Senshi Kurosubōn Gandamu) is a six-volume manga series written and illustrated by Yuuichi Hasegawa based on notes and information by Yoshiyuki Tomino, serialized in Kadokawa Shoten's Shōnen Ace magazine from December 1994 to March 1997 issues.

A sequel to the animated theatrical film Mobile Suit Gundam F91, Crossbone has been officially distributed only in Japan and Italy.

In Universal Century (UC) 0133, ten years after the events of F91, Crossbone Vanguard forces attack a transport ship called the Smashion as it heads to the space colonies run by the Jupiter Empire.

Tobia Arronax, a 13-year-old boy aboard the ship, flies out in a Batara mobile suit to fight the Crossbone Vanguard, who have long been derided as space pirates.

Tobia decides to be with the Vanguard, who reveal to him that the Jupiter Empire has spent several years building up its military strength to destroy the Earth Federation, with whom it has a partnership.