Choujinki Metalder (超人機メタルダー, Chōjinki Metarudā, Superhuman-Machine Metalder) is the sixth and shortest entry of the Metal Hero Series franchise, running from March 16, 1987, to January 17, 1988, for only 39 episodes. It was the first series to air on Sundays instead of Mondays. Metalder bears many similarities to Shotaro Ishinomori's Android Kikaider and Kikaider 01, particularly in its themes, characters, and the hero's costume design. The action footage of Superhuman-Machine Metalder was used for Saban Entertainment's live-action TV series VR Troopers.

For distribution purposes, Toei refers to this television series as Metalder.