The Invincible Iron Man #126, published by Marvel Comics in September 1979. It is part of the "Demon in a Bottle" storyline. The cover art is a homage to Tales of Suspense #39, where Iron Man first appeared. It features a cover by John Romita Jr. and Bob Layton.

The issue, titled "The Hammer Strikes!", is part of a larger story arc where Tony Stark is framed for murder. The story's synopsis involves Tony Stark being captured by his enemy, Justin Hammer, and taken to Hammer's floating fortress. Tony learns that Hammer has been remotely controlling his Iron Man armor, including using it to kill an ambassador to discredit Stark International. Tony, without his armor, must find a way to escape from the floating base, which is also guarded by a number of super-villains employed by Hammer. The comic ends with Tony successfully recovering his backup armor and preparing to fight against Hammer's villains.