Complete lists:
Marvel Comics graphic novels and trade paperbacks
Marvel Essentials
Marvel Masterworks
Astonishing X-Men Vol. 1: Gifted
Astonishing X-Men Vol. 2: Dangerous
Astonishing X-Men Vol. 3: Torn
New X-Men Vol. 4: Riot at Xavier's
New X-Men Vol. 7: Here Comes Tomorrow
New X-Men: Assault on Weapon Plus
New X-Men: Childhood's End
New X-Men: Childhood's End Vol. 3
New X-Men: Hellions
New X-Men Omnibus
New X-Men Academy X Vol. 1: Choosing Sides
New X-Men Academy X Vol. 2: Haunted
Ultimate X-Men Vol. 2: Return to Weapon X
Ultimate X-Men Vol. 3: World Tour
Ultimate X-Men Vol. 5: Ultimate War
Ultimate X-Men Vol. 6: Return of the King
Ultimate X-Men Vol. 7: Blockbuster
Ultimate X-Men Vol. 8: New Mutants
Ultimate X-Men Vol. 10: Cry Wolf
Ultimate X-Men Vol. 11: Most Dangerous Game
Ultimate X-Men Vol. 12: Hard Lessons
Ultimate X-Men Vol. 13: Magnetic North
Ultimate X-Men Vol. 14: Phoenix?
Ultimate X-Men Vol. 15: Magical
Ultimate X-Men: Fantastic Four
Ultimate X-Men: Hellfire and Brimstone
Ultimate X-Men: Ultimate War
Uncanny X-Men Omnibus Vol. 1
Uncanny X-Men Omnibus HC Variant
Uncanny X-Men Vol. 2: Dominant Species
Uncanny X-Men New Age Vol. 1: End of History
Uncanny X-Men New Age Vol. 2: Cruelest Cut
X-Men 2: The Movie
X-Men and Power Pack: Power of X
X-Men: Blood of Apocalypse
X-Men: Colossus - Bloodline
X-Men: Complete Age of Apocalypse Epic Book Two
X-Men: Complete Age of Apocalypse Epic Book Three
X-Men: Dark Phoenix Saga
X-Men: Deadly Genesis
X-Men: Eve of Destruction
X-Men: Fairy Tales
X-Men: Firestar (digest)
X-Men: Kitty Pryde - Shadow and Flame
X-Men: Mutant Genesis
X-Men Legends: Hated and Feared
X-Men: Phoenix - Endsong
X-Men the End Book One: Dreamers and Demons
X-Men the End Book Two: Heroes and Martyrs
X-Men: Vignettes Vol. 2
X-Treme X-Men Vol. 6: Intifada
X-Treme X-Men Vol. 7: Storm the Arena
X-Treme X: God Loves, Man Kills