What If? is a series that shows what would have happened if things had turned out differently during many of the famous Marvel stories. Of note is issues #4 and #9 of this volume are considered canon.

Continued in What If...? Vol. 2 (1989)

Collected Editions

  • What If? Classic #1 (#1-6)
  • What If? Classic: The Complete Collection Vol. 1 (#1-12)
  • What If?: The Original Marvel Series Omnibus Volume 1 (#1-15 & 17-22)
  • Captain America: The Legacy of Captain America (#4)
  • What If? Classic #2 (#7-12)
  • Agents of Atlas: The Complete Collection Vol. 1 (#9)
  • King-Size Kirby (#11)
  • What If? Classic: The Complete Collection Vol. 2 (#13-15 & 17-23)
  • Conan the Barbarian: The Original Marvel Years Omnibus Volume 4 (#13)
  • What If? Classic #3 (#14-15, #17-20)
  • Shang-Chi Master of Kung-Fu Omnibus Volume 3 (#16)
  • Marvel Masterworks: Doctor Strange Volume 8 (#18)
  • What If? Classic #4 (#21-26)
  • Hulk: Heart of the Atom (#23)
  • What If? Classic: The Complete Collection Vol. 3 (#24-35)
  • What If? Classic #5 (#27-32)
  • What If? Classic #6 (#33-38)
  • What If? Classic: The Complete Collection Vol. 4 (#36-47)
  • Conan the Barbarian: The Original Marvel Years Omnibus Volume 5 (#39)
  • Marvel Masterworks: The Fantastic Four Volume 22 (#36)
  • What If? Classic #7 (#40-42, #44-47, and material from #43)
  • Thor vs. Hulk (#45)

Non-U.S. Collected Editions

  • Capitán América: Patriota (#4) (Spanish)
  • King-Size Kirby (#11) (Spanish)
  • Best of Marvel Essentials: Daredevil de Frank Millar: Cazadores (#28) (Spanish)
  • Colección Frank Miller. Daredevil de Frank Miller y Klaus Janson (#28 & #35) (Spanish)
  • Coleccionable Marvel Héroes - Los 4 Fantásticos de John Byrne 1 (#36) (Spanish)
  • Coleccionable Marvel Héroes - El Asombroso Spiderman: La era del traje negro (#46) (Spanish)

Issues

Characters in volume

Died in volume

Concepts in volume

Locations in volume

Objects in volume

Authors in volume

Story arcs in volume

Teams in volume

Characters first appearance

Concepts first appearance

Locations first appearance

Objects first appearance