"Extremis" is a six-issue story arc from the comic book series Iron Man, published in issues one through six in 2005 and 2006 by Marvel Comics. It was written by Warren Ellis and illustrated by Adi Granov. Extremis elevates the status quo for Iron Man, increasing the power of his armor significantly.

Iron Man is the name of several comic book titles featuring the character Iron Man and published by Marvel Comics, beginning with the original Iron Man series that debuted in 1968.