Kinnikuman (キン肉マン), also known as Kinnikuman: Stolen Championship Belt (キン肉マン 奪われたチャンピオンベルト, Kinnikuman Ubawareta Chanpion Beruto), is the first theatrical film of the anime series Kinnikuman. It was released in Japan on July 14, 1984 along with Choudenshi Bioman, Uchuu Keiji Shaider, and The Kabocha Wine. It is set after the 21st Choujin Olympics.

This was the first movie to feature Kōji Yada, who appears in all following movies (except the final two), and also the first to feature series creators Yudetamago in a cameo. Octopus Dragon, Harigorasu, and Ukon are all kaijū from the infamous "Roots Island" two-part story from the original manga that does not appear in recent reprints. Mouko-seijin is also a kaijū from the original manga, although these characters bear little resemblance to their manga counterparts. The movie's monster Gigasaurus does resemble the manga's Octopus Dragon.

Descendants of Ukon would appear in all following films (usually played by Yudetamago).