Ben Stiller
Alex (voice)
Chris Rock
Marty (voice)
David Schwimmer
Melman (voice)
Jada Pinkett Smith
Gloria (voice)
Sacha Baron Cohen
Julien (voice)
Cedric the Entertainer
Maurice (voice)
Andy Richter
Mort (voice)
Tom McGrath
Skipper / Fossa / Panicky Man on Subway (voice)
Christopher Knights
Private (voice)
Chris Miller
Kowalski (voice)
Conrad Vernon
Mason (voice)
Eric Darnell
Zoo Announcer / Lemur #1 / Fossa / Subway Car Announcer (voice)
David Cowgill
Police Horse (voice)
Elisa Gabrielli
Old Lady (voice)
Stephen Apostolina
Police Officer (voice)
Devika Parikh
News Reporter (voice)
David P. Smith
Spider / Lemur #2 (voice)
Cody Cameron
Willie (voice)
Bob Saget
Zoo Animal (voice)
Jeffrey Katzenberg
Rico (voice) (uncredited)