Jennifer Garner
Sydney Bristow (22 eps)
Michael Vartan
Michael Vaughn (22 eps)
Victor Garber
Jack Bristow (22 eps)
Ron Rifkin
Arvin Sloane (22 eps)
Carl Lumbly
Marcus Dixon (22 eps)
Kevin Weisman
Marshall Flinkman (22 eps)
Greg Grunberg
Eric Weiss (22 eps)
Melissa George
Lauren Reed (22 eps)
David Anders
Julian Sark (22 eps)
Kurt Fuller
Robert Lindsey (6 eps)
Patricia Wettig
Judy Barnett (4 eps)
Djimon Hounsou
Kazari Bomani (3 eps)
Clifton Collins Jr.
Javier Parez (3 eps)
Mía Maestro
Nadia Santos (3 eps)
Amanda Foreman
Carrie Bowman (3 eps)
Justin Theroux
Simon Walker (2 eps)
Griffin Dunne
Leonid Lisenker (2 eps)
Richard Roundtree
Brill (2 eps)
David Cronenberg
Dr. Brezzel (2 eps)
Vivica A. Fox
Toni Cummings (2 eps)
Merrin Dungey
Allison Doren (2 eps)
Peggy Lipton
Olivia Reed (2 eps)
Raymond J. Barry
George Reed (2 eps)
Glenn Morshower
Marlon Bell (2 eps)
Tristin Mays
Robin Dixon (2 eps)
Scott Adsit
Pierre Lagravenese (1 eps)
Stana Katic
Flight Attendant (1 eps)
Morgan Weisser
Cypher (1 eps)
Oleg Taktarov
Gordei Volkov (1 eps)
Ed Brigadier
Reynard Kauffman (1 eps)
Erica Leerhsen
Kaya (1 eps)
Stephen Spinella
Mr. Kishell (1 eps)
Pruitt Taylor Vince
Campbell / Schapker (1 eps)
Luis Antonio Ramos
Detective Sanchez (1 eps)
Al Sapienza
Tom (1 eps)
Quentin Tarantino
McKenas Cole (1 eps)
Jenny Gago
Erin (1 eps)
Isabella Rossellini
Katya Derevko (1 eps)
Cotter Smith
Hank Foster (1 eps)
Erick Avari
Dr. Vasson (1 eps)
Arnold Vosloo
Mr. Zisman (1 eps)
Terry O'Quinn
Kendall (1 eps)
Stephanie Venditto
Cathy (1 eps)
Ricky Gervais
Daniel Ryan (1 eps)
Brad Greenquist
Otto Edel (1 eps)
Adam Alexi-Malle
Bernard (1 eps)
Ian Buchanan
Johannes Gathrid (1 eps)
David Carradine
Conrad (1 eps)
Ric Young
Zhang Lee (1 eps)
Damion Poitier
MP (uncredited) (1 eps)