UFO Warrior Daiapolon (UFO戦士ダイアポロン, Yūfō Senshi Dai Aporon) is a Japanese mecha anime television series that was produced by Eiken.

The series is about a 16-year-old boy Takeshi who recently formed an American football team at the Blue Sky orphanage.

Takeshi discovers he is the son of the king of the planet Apolon, spirited away to Earth by his father's retainer Labi to avoid death at the hands of General Dazaan.

Through a solar-powered process known as "body fusion", activated by the "Key Energy" device placed inside the boy's chest, Takeshi can "grow" in mass and become a giant humanoid, thus "wearing" the Daiapolon as a kind of cybernetical armour.

Although there are UFO scenes in the manga, it did not have the American football or super robot elements, and the enemies were demons with the power of the 108 Stars of Destiny.