Jonny Lee Miller
Dade Murphy / 'Crash Override' / 'Zero Cool'

Angelina Jolie
Kate Libby / 'Acid Burn'

Matthew Lillard
Emmanuelle Goldstein / 'Cereal Killer'

Jesse Bradford
Joey Pardella

Renoly Santiago
Ramon Sanchez / 'Phantom Phreak'

Laurence Mason
Paul Cook / 'Lord Nikon'

Fisher Stevens
Eugene Belford / 'The Plague' / Mr. Babbage

Lorraine Bracco
Margo

Wendell Pierce
S.S. Agent Richard Gill

Michael Gaston
S.S. Agent Bob

Marc Anthony
S.S. Agent Ray

Penn Jillette
Hal

Peter Y. Kim
Blade

Darren Lee
Razor

Alberta Watson
Lauren Murphy

Liza Walker
Laura

Bob Sessions
Duke Ellingson

Ethan Browne
Curtis

Blake Willett
S.S. Agent, Seattle

Max Ligosh
Young Dade Murphy / 'Zero Cool'

Felicity Huffman
Attorney

Paul Klementowicz
Michael Murphy

Richard Ziman
Judge

William DeMeo
Jock

Denise George
Denise

Johnny Myers
1st Sysop Technician

Kevin Brewerton
2nd Sysop Technician

Sam Douglas
English Teacher

Kal Weber
1st V.P.

Jeff Harding
2nd V.P.

Annemarie Lawless
Addict Vickie

Nancy Ticotin
Phreak's Mom

Naoko Mori
Tokyo Hacker

Dave Stewart
London Hacker

Равиль Исьянов
Russian Hacker

Olegar Fedoro
Russian Hacker

Jennifer Badger
'Cyberspirits' and Skaters

Christo Morse
'Cyberspirits' and Skaters

Bill Maul
Norm

Jeb Handwerger
Freshman on Roof

Mitchell McCormick
Freshman on Roof

Gary Klar
Mr. Simpson

Douglas W. Iles
Addict Hank

Michael Potts
Tow Truck Driver

Mike Cicchetti
Ellingson Guard

Mick O'Rourke
Phone Repairman

Roberta Gotti
Italian Hacker

Eric Loren
News Technician

Kristin Moreu
Flight Attendant

Ricco Ross
Second Reporter

Tony Sibbald
Jail Guard

Richard Purro
Talkshow Host

Enzo Junior
Da Vinci Virus

Yoshinori Yamamoto
3rd V.P.

Ralph Winter
4th V.P.

Kimbra Standish
Receptionist

Steven Angiolini
Rollerblader

Melissa Barkan
'Cyberspirits' and Skaters

Donald J. Hewitt Jr.
'Cyberspirits' and Skaters

Christopher Waller
'Cyberspirits' and Skaters

Joseph Lloyd
'Cyberspirits' and Skaters

C.J. Byrnes
Father (uncredited)