Sigourney Weaver

Character: Ripley

Winona Ryder

Character: Call

Dominique Pinon

Character: Vriess

Ron Perlman

Character: Johner

Gary Dourdan

Character: Christie

Michael Wincott

Character: Elgyn

Kim Flowers

Character: Hillard

Dan Hedaya

Character: General Perez

J.E. Freeman

Character: Dr. Wren

Brad Dourif

Character: Gediman

Raymond Cruz

Character: Distephano

Leland Orser

Character: Purvis

Carolyn Campbell

Character: Anesthesiologist

Marlene Bush

Character: Scientist

David St. James

Character: Surgeon

Rodney Mitchell

Character: Soldier with Glove

Robert Faltisco

Character: Soldier Shot Through Helmet

David Rowe

Character: Frozen Soldier

Garrett House

Character: Soldier

Rod Damer

Character: Soldier

Mark Mansfield

Character: Soldier

Daniel Raymont

Character: Soldier

Cris D'Annunzio

Character: Soldier

Steven Gilborn

Character: Father (voice)

Robert Bastens

Character: Sleeper

Rico Bueno

Character: Sleeper

Alex Lorre

Character: Sleeper

Ronald Ramessar

Character: Sleeper

Nicole Fellows

Character: Young Ripley

Tom Woodruff Jr.

Character: Lead Alien

Joan La Barbara

Character: Newborn Vocal (voice)

Archie Hahn

Character: Newborn Vocal (voice)

Eddie Yansick

Character: Soldier Who Stuns Ripley (uncredited)

Nito Larioza

Character: Sleeper (uncredited)

David Prior

Character: Alien (uncredited)

Nicholas Talone

Character: Soldier in Cocoon (uncredited)

Brad Martin

Character: Soldier Shot by Johner (uncredited)

Alec Gillis

Character: Hero Alien Warrior (uncredited)