Ultimate Comics: X-Men is an ongoing monthly comic-book series published by Marvel Comics. It made its debut in September 2011 as part of the second re-launch of "Ultimate Marvel". Through the "Ultimate Universe Reborn" tagline following the "Death of Spider-Man", and written by Nick Spencer with art by Paco Medina, the series serves as a continuation of earlier titles such as Ultimate X-Men, Ultimate Comics: X, and the Ultimate Comics: Fallout mini-series. This title also exists alongside other relaunched Ultimate Marvel works, including Ultimate Comics: Spider-Man and Ultimate Comics: Ultimates.

Ultimate X-Men is a superhero comic book series that was published by Marvel Comics from 2001 to 2009. The series is a modernized re-imagining of Marvel's long-running X-Men comic book franchise as part of its Ultimate Marvel imprint. The Ultimate X-Men exist alongside other revamped Marvel characters in Ultimate Marvel titles including Ultimate Spider-Man, Ultimate Fantastic Four, and The Ultimates.