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 Tony Stark when he assumes the identity of the superhero Iron Man. The first armor was created in-story by Stark and Ho Yinsen, and was designed by artist Jack Kirby, first appearing in Tales of Suspense #39 (March 1963).

In the fictional multiverse, the appearance of Stark's armor has changed over the years. Stark has modified or optimized the armor to adapt to specific situations. As various artists have depicted Iron Man and his armor, the appearance of the armor has changed over time.