Robert Downey Jr.
Tony Stark / Iron Man
Chris Evans
Steve Rogers / Captain America
Mark Ruffalo
Bruce Banner / Hulk
Scarlett Johansson
Natasha Romanoff / Black Widow
Don Cheadle
James Rhodes / War Machine
Benedict Cumberbatch
Doctor Strange
Tom Holland
Peter Parker / Spider-Man
Chadwick Boseman
T'Challa / Black Panther
Elizabeth Olsen
Wanda Maximoff / Scarlet Witch
Anthony Mackie
Sam Wilson / Falcon
Sebastian Stan
Bucky Barnes / Winter Soldier
Bradley Cooper
Rocket (voice)
Chris Pratt
Peter Quill / Star-Lord
Gwyneth Paltrow
Pepper Potts
Benicio del Toro
The Collector
William Hurt
Secretary of State Thaddeus Ross
Terry Notary
Cull Obsidian / On-Set Groot
Tom Vaughan-Lawlor
Ebony Maw
Carrie Coon
Proxima Midnight (voice)
Michael James Shaw
Corvus Glaive
Kerry Condon
Friday (voice)
Monique Ganderton
On-Set Proxima Midnight
Ariana Greenblatt
Young Gamora
Ameenah Kaplan
Gamora's Mother
Ross Marquand
Red Skull (Stonekeeper)
Michael Anthony Rogers
Secretary Ross' Aide
Stephen McFeely
Secretary Ross' Aide
Aaron Lazar
Doctor Strange Double
Robert Pralgo
Thanos Reader
Olaniyan Thurmon
Teenage Groot Reader
Blair Jasin
Street Pedestrian #1
Matthew Zuk
Street Pedestrian #2
Laura Miller
Scottish News (STV) Reporter
Kenneth Branagh
Asgardian Distress Call (voice) (uncredited)
Samuel L. Jackson
Nick Fury (uncredited)
Cobie Smulders
Maria Hill (uncredited)
Harrison Osterfield
Boy on Bus (uncredited)
Gary Peebles
Kingsguard (uncredited)
Marija Abney
Dora Milaje (uncredited)
Zola Williams
Dora Milaje (uncredited)
Marie Mouroum
Dora Milaje (uncredited)
James Siderits
NYC Pedestrian (uncredited)
Precious Jenkins
Border Tribe Warrior (uncredited)
Bobby James
Border Tribe Warrior (uncredited)
Lady Cardinal
Street Pedestrian #3 (uncredited)
Tanya Wheelock
Washington Square Park Waitress (uncredited)