Iron Man's armor is a fictional powered exoskeleton appearing in American comic books published by Marvel Comics. It is built and worn by billionaire superhero Tony Stark when he assumes the identity of Iron Man. The first armor (which in the story, was created by Stark and Ho Yinsen), was designed by artists Don Heck and Jack Kirby, and first appeared in Tales of Suspense #39 (March 1963).

In the fictional multiverse, the appearance of Stark's armor has radically changed over the years, either as a result of modifications made by Stark or specialized armors created for specific situations. In real life, it changed as different artists took over the series and decided to change it to what they wanted.