| Robert Downey | Tony Stark/Iron Man |
| Chris Evans | Steve Rogers/Captain America |
| Mark Ruffalo | Bruce Banner/The Hulk |
| Chris Hemsworth | Thor |
| Scarlett Johansson | Natasha Romanoff/Black Widow |
| Jeremy Renner | Clint Barton/Hawkeye |
| Tom Hiddleston | Loki |
| Clark Gregg | Agent Phil Coulson |
| Cobie Smulders | Agent Maria Hill |
| Stellan Skarsgård | Professor Erik Selvig |
| Samuel L. Jackson | Nick Fury |
| Gwyneth Paltrow | Pepper Potts |
| Paul Bettany | Jarvis |
| Alexis Denisof | The Other |
| Tina Benko | NASA Scientist |
| Jerzy Skolimowski | Georgi Luchkov |
| Kirill Nikiforov | Weaselly Thug |
| Jeff Wolfe | Tall Thug |
| M'Laah Singh | Young Girl |
| Rashmi Rustagi | Calcutta Woman |
| Powers Boothe | World Security Council Member |
| Jenny Agutter | World Security Council Member |
| Arthur Darbinyan | World Security Council Member |
| Donald Li | World Security Council Member |
| Warren Kole | Carrier BridgeTech |
| Alicia Sixtos | Carrier BridgeTech |
| Jesse Garcia | Carrier BridgeTech |
| Maximiliano Hernandez | Agent Jasper Sitwell |
| Dieter Riesle | Gala Scientist |
| Kenneth Tigar | German Old Man |
| Walter Perez | Young Shield Pilot |
| Harry Dean Stanton | Security Guard |
| Josh Cowdery | Maintenance Guy |
| Ashley Johnson | Waitress |
| Katsumi Komatsu | Member of Japanese Family |
| Yumiko Komatsu | Member of Japanese Family |
| Momoko Komatsu | Member of Japanese Family |
| Robert Clohessy | Police Sergeant |
| Enver Gjokaj | Young Cop |
| Fernanda Toker | Office Woman |
| Andrea Vecchio | News Reporter |
| Robin Swoboda | News Reporter |
| Brent McGee | Faceless Pilot |
| Jamie McShane | Celebration Montage Interviewee |
| Michael Zhang | Celebration Montage Interviewee |
| William Christopher Stevens | Celebration Montage Interviewee |
| Kelley Robins Hicks | Celebration Montage Interviewee |
| Romy Rosemont | Shawna Lynde |
| James Eckhouse | Senator Boynton |
| Damion Poitier | Man #1 |
Technical Credits
| Joss Whedon | Director,Original Story,Screenwriter |
| Victoria Alonso | Executive Producer |
| Allan A. Apone | Makeup |
| John Berger | Set Decoration/Design |
| Christopher Boyes | Sound/Sound Designer |
| Alexandra Byrne | Costumes/Costume Designer |
| James Chinlund | Production Designer |
| Tim Crowshaw | Set Decoration/Design |
| Louis D'Esposito | Executive Producer |
| Benjamin Edelberg | Art Director |
| Jann K. Engel | Art Director |
| Jon Favreau | Executive Producer |
| Kevin Feige | Producer |
| Alan Fine | Executive Producer |
| Jeffrey Ford | Editor |
| Marisa Frantz | Set Decoration/Design |
| David Grant | Associate Producer |
| James Hewitt | Set Decoration/Design |
| Greg Hooper | Art Director |
| Luis G. Hoyos | Set Decoration/Design |
| William Hunter | Art Director |
| Film Illusions | Costumes/Costume Designer |
| Ironhead Studio | Costumes/Costume Designer,Makeup Special Effects |
| Dave Jordan | Musical Direction/Supervision |
| Lisa Lassek | Editor |
| Jeremy Latcham | Executive Producer |
| Stan Lee | Executive Producer |
| Jeff Markwith | Set Decoration/Design |
| Richard Mays | Set Decoration/Design |
| Seamus Mcgarvey | Cinematographer |
| Randy Moore | Art Director |
| Douglas Noe | Makeup |
| Sam Page | Set Decoration/Design |
| Greg Papalia | Set Decoration/Design |
| Zak Penn | Original Story,Screenwriter |
| Anne Porter | Set Decoration/Design |
| Paul Rubell | Editor |
| Keith Sayer | Makeup |
| Scott Schneider | Set Decoration/Design |
| Alan Silvestri | Score Composer |
| Nicole Sortillon | Makeup |
| Daniel Sudick | Special Effects Supervisor |
| Heba Thorisdottir | Makeup |
| Patricia Whitcher | Executive Producer |
| Lars P. Winther | Asst. Director |
