Chris Hemsworth as Thor

Natalie Portman as Jane Foster

Tom Hiddleston as Loki

Anthony Hopkins as Odin

Stellan Skarsgård as Erik Selvig

Kat Dennings as Darcy Lewis

Clark Gregg as Agent Coulson

Colm Feore as King Laufey

Idris Elba as Heimdall

Ray Stevenson as Volstagg

Tadanobu Asano as Hogun

Josh Dallas as Fandral

Jaimie Alexander as Sif

Rene Russo as Frigga

Adriana Barraza as Isabela Alvarez

Maximiliano Hernández as Agent Sitwell

Richard Cetrone as Frost Giant Captain

Darren Kendrick as Frost Giant Sentry

Josh Coxx as Frost Giant Hailstrum

Justice J. Smith Jr. as Frost Giant Brute

Joseph Gatt as Frost Giant Grundroth

Luke Massy as Frost Giant Raze

Matthew Ducey as Einherjar Guard

Jason Camp as Einherjar Guard

Buddy Sosthand as Agent Delancey

Blake Silver as Techie

Jamie McShane as Agent Jackson

Dale Godboldo as Agent Garrett

Patrick O'Brien Demsey as Agent Cale

Jim Palmer as SHIELD Guard

Seth Coltan as Townie

J. Michael Straczynski as Townie

Ryan Schaefer as Townie

Matt Battaglia as Pete

Stan Lee as Stan the Man

Joel McCrary as Drunk Townie

Isaac Kappy as Pet Store Clerk

Juliet Lopez as Admission Nurse

Rob Mars as Orderly

Carrie Lazar as Viking Mother

Harley Graham as Viking Child

Alexander Wright as Viking Elder

Hilary Pingle as Viking

Shawn-Caulin Young as Viking

Kinsey McLean as Viking

Kelly Hawthorne as Viking

Dakota Goyo as Young Thor

Ted Allpress as Young Loki

Douglas Tait as Frost Giant (uncredited)

Walt Simonson as Guest (uncredited)

Jeremy Renner as Clint Barton / Hawkeye (uncredited)

Samuel L. Jackson as Nick Fury (uncredited)

Vanessa Bednar as Viking Villager (uncredited)

Michelle Csitos as Viking Village Wife (uncredited)

Stephen Oyoung as Einherjar Guard (uncredited)

Rachel de la Torre as Nurse #1 (uncredited)