Sigourney Weaver

Ripley

Winona Ryder

Call

Dominique Pinon

Vriess

Ron Perlman

Johner

Gary Dourdan

Christie

Michael Wincott

Elgyn

Kim Flowers

Hillard

Dan Hedaya

General Perez

J.E. Freeman

Dr. Wren

Brad Dourif

Gediman

Raymond Cruz

Distephano

Leland Orser

Purvis

Carolyn Campbell

Anesthesiologist

Marlene Bush

Scientist

David St. James

Surgeon

Rodney Mitchell

Soldier with Glove

Robert Faltisco

Soldier Shot Through Helmet

David Rowe

Frozen Soldier

Garrett House

Soldier

Rod Damer

Soldier

Mark Mansfield

Soldier

Daniel Raymont

Soldier

Cris D'Annunzio

Soldier

Steven Gilborn

Father (voice)

Robert Bastens

Sleeper

Rico Bueno

Sleeper

Alex Lorre

Sleeper

Ronald Ramessar

Sleeper

Nicole Fellows

Young Ripley

Tom Woodruff Jr.

Lead Alien

Joan La Barbara

Newborn Vocal (voice)

Archie Hahn

Newborn Vocal (voice)

Eddie Yansick

Soldier Who Stuns Ripley (uncredited)

Nito Larioza

Sleeper (uncredited)

David Prior

Alien (uncredited)

Nicholas Talone

Soldier in Cocoon (uncredited)

Brad Martin

Soldier Shot by Johner (uncredited)

Alec Gillis

Hero Alien Warrior (uncredited)