| Actor/Actress |
Role |
| Chris Pratt |
Peter Quill / Star-Lord |
| Zoe Saldana |
Gamora |
| Dave Bautista |
Drax the Destroyer |
| Vin Diesel |
Groot (voice) |
| Bradley Cooper |
Rocket (voice) |
| Lee Pace |
Ronan the Accuser |
| Michael Rooker |
Yondu Udonta |
| Karen Gillan |
Nebula |
| Djimon Hounsou |
Korath |
| John C. Reilly |
Corpsman Dey |
| Glenn Close |
Nova Prime |
| Benicio del Toro |
Taneleer Tivan / The Collector |
| Laura Haddock |
Meredith Quill |
| Sean Gunn |
Kraglin / On Set Rocket |
| Peter Serafinowicz |
Denarian Saal |
| Christopher Fairbank |
The Broker |
| Krystian Godlewski |
On Set Groot |
| Wyatt Oleff |
Young Quill |
| Gregg Henry |
Grandpa |
| Janis Ahern |
Meredith's Mother |
| Solomon Mousley |
Meredith's Brother |
| Lindsay Morton |
Meredith's Best Friend |
| Robert Firth |
Dr. Fitzgibbon |
| Melia Kreiling |
Bereet |
| Tom Proctor |
Horuz |
| Nick Holmes |
Horuz' Mate |
| Max Wrottesley |
Sacrificed Nova Corpsman |
| Stan Lee |
Xandarian Ladies' Man |
| Nicole Alexandra Shipley |
Pretty Xandarian |
| Sharif Atkins |
Nova Arresting Pilot |
| Brendan Fehr |
Corpsman Dey's Partner |
| Tomas Arana |
Kree Ambassador |
| Mikaela Hoover |
Nova Prime's Assistant |
| Emmett Scanlan |
Head Riot Guard |
| Dominic Grant |
Angry Guard |
| Spencer Wilding |
Mean Guard |
| Alison Lintott |
Sad Woman with Horns |
| Alexis Rodney |
Moloka Dar |
| Nathan Fillion |
Monstrous Inmate |
| Keeley Forsyth |
Mottled Prisoner |
| Frank Gilhooley |
Burly Prisoner |
| Alexis Denisof |
The Other |
| Enzo Cilenti |
Watchtower Guard |
| Richard Katz |
One Legged Prisoner |
| Enoch Frost |
Rifle Guard |
| Ronan Summers |
"Drop the Leg" Guard |
| Ophelia Lovibond |
Carina |
| Laura Ortiz |
Tortured Pink Girl |
| Marama Corlett |
Pit Boss |
| Rosie Jones |
Lady of the Boot of Jemiah |
| Abidemi Sobande |
Lady of the Boot of Jemiah |
| Alex Rose |
Lady of the Boot of Jemiah |
| Ekaterina Zalitko |
Lady of the Boot of Jemiah |
| Emily Redding |
Lady of the Boot of Jemiah |
| Fred |
Cosmo the Space Dog |
| Stephen Blackehart |
Knowhere Dispatcher |
| Jennifer Moylan-Taylor |
Sad Krylorian Girl |
| Bruce Mackinnon |
One-Eyed Ravager |
| Ralph Ineson |
Ravager Pilot |
| Rob Zombie |
Ravager Navigator (voice) |
| Naomi Ryan |
Nova Centurion |
| John Brotherton |
Nova Starblaster Pilot |
| Graham Shiels |
Alien Nova Pilot |
| James Gunn |
Maskless Sakaaran |
| Douglas Robson |
Maskless Sakaaran |
| Rachel Cullen |
Corpsman Dey's Wife |
| Isabella Poynton |
Corpsman Dey's Daughter |
| Imogen Poynton |
Corpsman Dey's Daughter |
| David Yarovesky |
Goth Ravager |
| Miriam Lucia |
Crying Xandarian Citizen |
| Josh Brolin |
Thanos (uncredited) |
| Lloyd Kaufman |
Prisoner (uncredited) |
| Tyler Bates |
Ravager Pilot (uncredited) |
| Seth Green |
Howard the Duck (voice) (uncredited) |
| Jozef Aoki |
Kyln Prisoner (uncredited) |
