Robert Downey Jr. as Tony Stark / Iron Man

Chris Evans as Steve Rogers / Captain America

Mark Ruffalo as Bruce Banner / Hulk

Chris Hemsworth as Thor

Scarlett Johansson as Natasha Romanoff / Black Widow

Jeremy Renner as Clint Barton / Hawkeye

Josh Brolin as Thanos

Don Cheadle as James Rhodes / War Machine

Paul Rudd as Scott Lang / Ant-Man

Benedict Cumberbatch as Doctor Strange

Chadwick Boseman as T'Challa / Black Panther

Brie Larson as Carol Danvers / Captain Marvel

Tom Holland as Peter Parker / Spider-Man

Karen Gillan as Nebula

Zoe Saldaña as Gamora

Evangeline Lilly as Hope Van Dyne / Wasp

Tessa Thompson as Valkyrie

Rene Russo as Frigga

Elizabeth Olsen as Wanda Maximoff / Scarlet Witch

Anthony Mackie as Sam Wilson / Falcon

Sebastian Stan as Bucky Barnes / Winter Soldier

Tom Hiddleston as Loki

Danai Gurira as Okoye

Benedict Wong as Wong

Pom Klementieff as Mantis

Dave Bautista as Drax

Letitia Wright as Shuri

John Slattery as Howard Stark

Tilda Swinton as The Ancient One

Jon Favreau as Happy Hogan

Hayley Atwell as Peggy Carter

Natalie Portman as Jane Foster

Marisa Tomei as Aunt May

Taika Waititi as Korg (voice)

Angela Bassett as Ramonda

Michael Douglas as Hank Pym

Michelle Pfeiffer as Janet Van Dyne

William Hurt as Secretary of State Thaddeus Ross

Cobie Smulders as Maria Hill

Sean Gunn as On-Set Rocket / Kraglin

Winston Duke as M'Baku

Linda Cardellini as Laura Barton

Maximiliano Hernández as Agent Sitwell

Frank Grillo as Brock Rumlow

Hiroyuki Sanada as Akihiko

Tom Vaughan-Lawlor as Ebony Maw

James D'Arcy as Jarvis

Jacob Batalon as Ned

Vin Diesel as Groot (voice)

Bradley Cooper as Rocket (voice)

Gwyneth Paltrow as Pepper Potts

Robert Redford as Alexander Pierce

Chris Pratt as Peter Quill / Star-Lord

Samuel L. Jackson as Nick Fury

Lexi Rabe as Morgan Stark

Ross Marquand as Red Skull (Stonekeeper)

Joe Russo as Grieving Man

Emma Fuhrmann as Cassie Lang

Michael James Shaw as Corvus Glaive

Terry Notary as On-Set Groot / Cull Obsidian

Kerry Condon as Friday (voice)

Ben Sakamoto as Cooper Barton

Ava Russo as Lila Barton

Cade Woodward as Nathaniel Barton

Stan Lee as Driver

Yvette Nicole Brown as S.H.I.E.L.D. Agent

Callan Mulvey as Jack Rollins

Lia Russo as Lia

Julian Russo as Julian

Taylor Patterson as Taylor

Agostino Rosalina as Augie

Ken Jeong as Security Guard

Ty Simpkins as Harley Keener

Jackson A. Dunn as Scott Lang (12 Y.O.)

Lee Moore as Scott Lang (93 Y.O.)

Bazlo LeClair as Scott Lang (Baby)

Loen LeClair as Scott Lang (Baby)

Matthew Berry as S.H.I.E.L.D. Agent

Joy McAvoy as Asgardian Maiden

John Michael Morris as Young Hank Pym

Michael A. Cook as Male S.H.I.E.L.D. Agent

Brent McGee as Camp Lehigh Guard

Brian Schaeffer as Military Police

Jamie Wedel as Drill Sergeant

Anthony G Breed as Young Stan Lee Double

Erica Ribley as Car Girl

Monique Ganderton as On-Set Proxima Midnight

Jim Starlin as Support Group Man #1

Jimmy Ray Pickens as Support Group Man #2

Hye Jin Jang as Japanese Girl

Russell Bobbitt as Diner Owner

James Lin as Diner Cook

Jack Champion as Kid on Bike

Sam Hargrave as New Asgard Truck Driver

Patrick Gorman as Old Steve Rogers Double

Aaron Lazar as Doctor Strange Double

Robert Pralgo as Thanos Reader

Tom Wisdom as Loki Reader

John Posey as Alexander Pierce Reader

Ameenah Kaplan as Gamora Reader

Olaniyan Thurmon as Teenage Groot Reader

Jennifer Elmore as On Set Reader #1

Mike Lutz as On Set Reader #2

Donald Mustard as Kamar-Taj Sorcerer (uncredited)

Robert Tinsley as Military Officer (uncredited)