List of 24 characters

The following is a list of characters in the television series 24. It includes some relatively minor characters not considered part of the main cast, and "bad guys". It is not, however, a complete list.

The list first names the actor, followed by the character and a brief description.

Some characters have their own pages; see the box below.

Season One

The Bauers

CTU / Division

Palmer's family and staff

Other associates of Palmer

Devika Parikh — Maureen Kingsley
John Prosky — George Ferragamo

First assassination plot

Drazen's family and associates

Dennis Hopper — Victor Drazen
Zeljko Ivanek — Andre Drazen
Misha Collins — Alexis Drazen
Henri Lubatti — Jovan Myovic
Currie Graham — Ted Cofell
David Franco — Alan Morgan (Sabotør)
Eugene Lazarev — Nikola (friend of the Drazen family)
Juliette Dudnick — Mila (Nikola's daughter)

Rick's friends outside the plot

Edoardo Ballerini — Frank Allard
Navi Rawat — Melanie

Miscellaneous

Wade Andrew Williams — Robert Ellis
Jacqui Maxwell — Janet York
Lou Diamond Phillips — Mark DeSalvo
Vincent Angell — Phil Parslow
Kathleen Wilhoite — Lauren Proctor
Christine Avila — Erica Vasquez
Gary Murphy — Vincent O'Brian
Pauley Perrette — Tanya
Jason Matthew Smith — Chris

Season Two

CTU / Division

Kiefer Sutherland — Jack Bauer
Xander Berkeley — George Mason
Carlos Bernard — Tony Almeida
Reiko Aylesworth — Michelle Dessler
Paul Schulze — Ryan Chappelle
Randle Mell — Brad Hammond (CTU Division Supervisor)
Sara Gilbert — Paula Schaeffer
Lourdes Benedicto — Carrie Turner
Donnie Keshawarz — Yusuf Auda
Daniel Dae Kim — Tom Baker (CTU agent)
John Eddins — Agent Richards (CTU agent)
Donzaleigh Abernathy — Assistant to Agent Richards (CTU agent; hjalp Richards)
Michael Cudlitz — Rick Phillips (CTU agent; Accompanies Jack with Nina Myers - Plane)
Bryan Rasmussen — Ed Miller (CTU agent; Accompanies Jack with Nina Myers - Truck)
Val Lauren — Randy Murdock (CTU agent; Imaging expert)
Max Martini — Steve Goodrich (CTU agent; Meets Jack at Norton Airfield)
Neal Matarazzo — Graves (CTU agent; Field Ops)
Commodore James — Gibson (CTU agent; Audio expert)
Dylan Haggerty — NEST Technician #1 (Technician who looks at nuke)

Palmer's family and administration

Dennis Haysbert — David Palmer
Penny Johnson Jerald — Sherry Palmer
Vicellous Reon Shannon — Keith Palmer
Jude Ciccolella — Mike Novick
Glenn Morshower — Aaron Pierce
Timothy Carhart — Eric Rayburn (Deputy Director of the NSA)
Harris Yulin — Roger Stanton
Michelle Forbes — Lynne Kresge
Alan Dale — Jim Prescott (Vice-President of the United States)
Steven Culp — Ted Simmons
Austin Tichenor — Secretary of Treasury
John Rubinstein — Secretary of State (Casts the deciding vote to invoke the 25th Amendment)
Robert Pine — Secretary of Agriculture
Dean Norris — General Bowden (Senior Military Adviser; Joint Chiefs of Staff)
Terry Bozeman — Richard Armus (Secret Service Agent)
Tamlyn Tomita — Jenny Dodge

Kim Bauer storyline

Elisha Cuthbert — Kim Bauer
Billy Burke — Gary Matheson
Tracy Middendorf — Carla Matheson
Skye McCole Bartusiak — Megan Matheson
Kevin Dillon — Lonnie McRae
Innis Casey — Miguel
Michael McGrady — Officer Brown (Arrests Miguel, Kim and Megan)
Shaheen Vaaz — Ranger Mike Kramer (Checks in at Lonnie's cabin looking for Kim)
Victor Rivers — Officer Amis (Desk Sergeant at Santa Carlita Police Station)
Jamison Jones — Deputy Nirman (Officer in charge at store)
Sterling Macer Jr — Deputy Raynes (Arrests Kim Bauer at store)
Susan Gibney — Anna (Motorist who gives Kim Bauer a lift)
Lombardo Boyar — Ramon Garcia (Holds up convenience store)
Brent Sexton — Frank Davies (Convenience Store owner)

Foreign diplomats

Alexander Zale — Ambassador Shareef (Ambassador for a Middle Eastern state)
Christopher Maher — Deputy Prime Minister Barghouti (Deputy Prime Minister for a Middle Eastern state)
Nico Guilak — Salim (Attache for Middle Eastern state)

The Warners and the Naiyeers

John Terry — Bob Warner
Sarah Wynter — Kate Warner
Laura Harris — Marie Warner
Phillip Rhys — Reza Naiyeer
Shaun Duke — Karima (Reza's Father)
Yareli Arizmendi — Hasan Naiyeer (Reza's Mother)

Traitors involved in terrorist plot

Sarah Clarke — Nina Myers (Former CTU agent; Prisoner; Terrorist aid)
Gregg Henry — Jonathan Wallace (Member of Coral Snake team; worked for Peter Kingsley into making sure the bomb went off and that America would go to war with three Middle Eastern countries)

Wald's crew

Jon Gries — Joseph Wald (Boss of Crew that Bombs CTU)
Douglas O'Keeffe — Eddie Grant (Works for Joseph Wald)
Gregory Sporleder — Dave (Part of Grant's Crew)
Jimmi Simpson — Chris (Part of Grant's Crew)

Ali's family and second wave

Francesco Quinn — Syed Ali (Terrorist leader)
Anthony Azizi — Mamud Rasheed Faheen (Suspected by Nina Myers of knowing location of nuke)
Shaheen Vaaz — Mrs. Ali (Married to Syed Ali)
Ike Bram — Fareed Ali (Young son of Syed Ali)
Raja Fenske — Asad Ali (Young son of Syed Ali)
Aki Avni — Moshen (Aids Ali in torturing Paul Koplin)
Anthony Azizi — Marko Khatami (Part of 3 man group that transported nuke to airfield)
Marc Casabani — Omar (Part of 3 man group that transported nuke to airfield)
Fred Toma — Basheer (Part of 3 man group that transported nuke to airfield)

Peter Kingsley Group

Tobin Bell — Peter Kingsley (Businessman; main villain)
Eugene Robert Glazer — Alexander Trepkos (Intermediary between Max and Kingsley)
Mia Kirshner — Mandy (Assassin from Season 1 returns)
Thomas Kretschmann — Max (Financier and possible boss of Kingsley; hired Mandy)
Nina Landey — Eve (Assistant to Peter Kingsley)
Rick D. Wasserman — Alex Hewitt (Fabricated the Cyprus audio tapes)
Peter Outerbridge — Ronnie Stark (Part of Kingsley's group that tortures Jack; #1)
Brian Goodman — Raymond O'Hara (Part of Kingsley's group that tortures Jack; #2)

Miscellaneous Feds/ Police / Medical

Scott Allan Campbell — Dr. Porter (Field medic at warehouse, diagnoses George Mason)
Sal Landi — Sgt. Arroyo (LAPD officer at warehouse)
Christopher Murray — FBI Agent Dockery (Agent at airfield)

Miscellaneous characters

Antonio David Lyons — Cam Strocker (Telephone Repairman taken hostage)
Justin Louis — Dr. Spire (Doctor at medical center)
Bernard White — Al Fulani (Owner of Mosque)
Justin Louis — Danny Dessler (Michelle Dessler's Brother)
Eric Christian Olsen — John Mason (George Mason's only son)
Jim Abele — Ralph Burton (Private Investigator who helps Kate Warner)
Al Sapienza — Paul Koplin (Ralph Burton's boss)
Michael Holden — Ron Wieland (Journalist; Held by the President)
Michael Mantell — Steve Hillenburg (CIA Operative who aides Sherry Palmer)
James Michael Reed — Foreman (Foreman for a construction crew that Marie Warner talks to)
Nick Offerman — Marcus (Captures Kate Warner and assaulted Yusuf Auda)
Raymond Cruz — Rouse (Captures Kate Warner and assaulted Yusuf Auda)

Season Three

CTU / Division

Kiefer Sutherland — Jack Bauer (CTU Head of Field ops; Acting CTU Director)
Carlos Bernard — Tony Almeida (CTU Director, Michelle Dessler's Husband)
Reiko Aylesworth — Michelle Dessler (CTU agent; #2 in charge; Tony Almeida's wife)
Elisha Cuthbert — Kim Bauer (CTU agent; Jack's daughter)
James Badge Dale — Chase Edmunds (CTU agent; Field ops; Jack Bauer's partner; Kim's boyfriend)
Jesse Borrego — Gael Ortega (CTU agent)
Mary Lynn Rajskub — Chloe O'Brian (CTU programmer)
Zachary Quinto — Adam Kaufman (CTU agent)
Paul Schulze — Ryan Chappelle (CTU Division Director)
Randle Mell — Brad Hammond (CTU Division Superviser)
Daniel Dae Kim — Tom Baker (CTU agent; Field ops)
Butch Klein — Darren Richards (CTU interrogator; tortures Nina)
Jenette Goldstein — Rae Plachecki (Division agent; interviews Jack and later Tony)
Carrie Kim — Jade Paik (CTU Division Secretary)
David Herman — Dalton Furrelle (CTU technician)

Palmer's family and administration and associates

Dennis Haysbert — David Palmer (President of the United States)
Penny Johnson Jerald — Sherry Palmer (David's ex-wife)
Glenn Morshower — Aaron Pierce (The head of Palmer's Secret Service detail)
D.B. Woodside — Wayne Palmer (David Palmer's Brother; Chief of Staff)
Wendy Crewson — Anne Packard (Palmer's personal doctor; Palmer's girlfriend)
Albert Hall — Alan Milliken (Major contributor to Palmer's campaign/Ally of his Presidency)
Gina Torres — Julia Milliken (Wife of Alan Milliken)
Alan Dale — Jim Prescott (Vice President of the United States)
Conor O'Farrell — Ted Packard (Anne's ex-husband)
Michael Cavanaugh — Joseph O'Laughlin (Director of Homeland Security)

Salazar family and associates

Joaquim de Almeida — Ramon Salazar (Narco-terrorist; Head of the Salazar family)
Vincent Laresca — Hector Salazar (Ramon's brother; Head of family in Ramon's absence)
Vanessa Ferlito — Claudia (Girlfriend of Hector)
Josh Cruz — Oriol (Claudia's father)
Julian Rodriguez — Sergio (Claudia's brother)
Lorry Goldman — Douglas Shaye (Ramon's lawyer)
Gino Montesinos — Eduardo (Henchman)
Eduardo Garcia — Emilio (Henchman)
Gonzalo Menendez — Pablo (Henchman)

Singer family and associates

Riley Smith — Kyle Singer (First time "drug dealer")
Ted Marcoux — Sam Singer (Kyle's unemployed father)
Lucinda Jenney — Helen Singer (Kyle's mother)
Agnes Bruckner — Linda (Kyle's girlfriend)
Kett Turton — Tim (Kyle's best friend)
Darin Cooper — Don (the Singer's landlord)

Saunder's family and crew

Paul Blackthorne — Stephen Saunders (Former soldier and MI6 agent; turned into terrorist; main villain)
Greg Ellis — Michael Amador (Seller of biological weapon)
Lothaire Bluteau — Marcus Alvers (arms dealer; sold the Cordilla Virus; assumed to have a past with Nina Myers)
Salvator Xuereb — Arthur Rabens (one of Stephen Saunders' couriers, has biological weapon in L.A.)
Alexandra Lydon — Jane Saunders (Daughter of Stephen Saunders)
Joe D’Angerio — Osterlind (Saunders' assistant)
Gabrielle Fitzpatrick — Diana White (lover of Steven Saunders; help fund Saunders' operation)

National Health Services

Andrea Thompson — Dr. Nicole Duncan
Christina Chang— Dr. Sunny Macer

Miscellaneous police / Feds / Medical

Paul Vincent O’Connor — Police Chief Hendrix
Tony Todd — Detective Michael Norris (interrogates Julia Milliken)
Simon Templeman — Trevor Tomlinson (Agent in MI6 office in LA; killed in gunship attack)

Chandler Plaza Hotel staff and guests

Doug Savant — Craig Phillips (Head of Hotel security)
Paris Tanaka — Maya
Sue Jin Song — Annalie Kim
Scott Klace — Irate Hotel Guest

Miscellaneous characters

Sarah Wynter — Kate Warner (Ex-girlfriend of Jack Bauer)
Sarah Clarke — Nina Myers (Terrorist; Former CTU agent)
Geoff Pierson — John Keeler (Republican Presidential Candidate)
Carlos Gomez — Luis Annicon (Prison Supervisor; one of Jack's companions in the one year operation that brought down Ramon Salazar)
Kamala Lopez-Dawson — Theresa Ortega (Gael's wife)
JF Pryor — Zack Porter (Drug-dealer)

Season Four

Department of Defense / Heller's family

Kiefer Sutherland — Jack Bauer (Special Assistant to the Secretary of Defense)
William Devane — James Heller (United States Secretary of Defense)
Logan Marshall-Green — Richard Heller (James Heller's son)
Kim Raver — Audrey Raines (James Heller's daughter; Jack Bauer's girlfriend; Senior Policy Assistant to Heller)
James Frain — Paul Raines (Audrey's separated husband)
David Newsom — Scott Borman (Heller's aide)

CTU / Division

Alberta Watson — Erin Driscoll (CTU Director)
Reiko Aylesworth — Michelle Dessler (CTU Division Deputy Director; CTU Los Angeles Branch Acting Director; Tony's ex-wife)
Carlos Bernard — Tony Almeida (former CTU agent, re-instated to CTU on a provisional basis)
James Morrison — Bill Buchanan (CTU Division Director; formerly involved with Michelle)
Mary Lynn Rajskub — Chloe O'Brian (CTU agent; Senior Analyst)
Roger Cross — Curtis Manning (CTU agent; Head of Tactical)
Lana Parrilla — Sarah Gavin (CTU agent)
Louis Lombardi — Edgar Stiles (CTU agent)
Aisha Tyler — Marianne Taylor (consultant for CTU)
Robert Cicchini — Howard Bern (CTU Field agent)
Cameron Bancroft — Lee Castle (CTU agent; Tactical team)
Shawn Doyle — Ronnie Lobell (CTU agent; Head of Field ops)
Thomas Vincent Kelly — Marc Besson (CTU doctor who treats Paul Raines and Lee Jong)
Butch Klein — Eric Richards (CTU chief interrogator; tortures Richard Heller and Sarah Gavin)
Naomi Kirkpatrick — Meredith Atterson (CTU Security Executive, helped Curtis place Marianne Taylor into custody)
Brandon Barash — Brandon (CTU Tech)
Shannon Becker — Allison Nichols (escorted Michelle Dessler into CTU and helped her take control)

Terrorist group

Arnold Vosloo — Habib Marwan (leader of the terrorist plot; main villain)
Nestor Serrano — Navi Araz (key terrorist)
Shohreh Aghdashloo — Dina Araz (his wife)
Jonathan Ahdout — Behrooz Araz (their son)
Ned Vaughn — Mitch Anderson (former American military officer; fires on Air Force One)
Tony Plana — Omar (in command at the compound; kidnapper of Secretary Heller)
Mia Kirshner — Mandy (Assassin from Season 1 and 2 returns, takes Tony hostage)
Anil Kumar — Kalil Hasan (henchman)
Adam Alexi-Malle — Joseph Fayed (Terrorist cell member; delivers Dina Araz and Jack Bauer to Marwan)
Dagmara Dominczyk — Nicole (hired mercenary working with Anderson; posed as an American pilot's girlfriend, then as an FBI agent)
John Thaddeus — Joe Prado (mercenary illegally tortured by Jack)
Keith Szarabajka — Robert Morrison (associate of Marwan's supervising the assembly of the nuclear missile)
Kris Iyer — Sabir Ardakani (engineer working on the missile)
Adoni Maropis — Thomas Sherrek (terrorist suspect who is shot in the leg by Jack Bauer and reveals the plan to kidnap Secretary Heller and Audrey Raines)

Keeler's family and administration

Geoff Pierson — John Keeler (President of the United States)
Chris Olivero — Kevin Keeler (John Keeler's son)
Gregory Itzin — Charles Logan (Vice-President of the United States/Acting President)
Jude Ciccolella — Mike Novick (Logan's Chief of Staff)
John Allen Nelson — Walt Cummings (Logan's head of security)
Glenn Morshower — Aaron Pierce (Secret Service agent)
Dennis Haysbert — David Palmer (Former President of the United States/Special Advisor to President Logan)
J. Patrick McCormack — Robert Franklin (aide to the President)
Patrick Kilpatrick — Dale Spalding (Secret service agent sent by Cummings who "kills" Jack)

McLennan-Forster storyline

Robertson Dean — Henry Powell (Marianne's contact)
Bill Smitrovich — Gene McLennan (CEO of McLennan-Forster)
Richard Marcus — Forbes (McLennan-Forster henchman; kills Marianne and captures Curtis)
Albie Selznick — John Reiss (McLennan-Forster CFO; orders EMP device activated)
Tomas Arana — Dave Conlon (Head of security for McLennan-Forster)
Amin Nazemzadeh — Naji (Arab-American; brother of Safa; defends his store along with Jack and Paul)
Omid Abtahi — Safa (Arab-American; brother of Naji; defends his store along with Jack and Paul)

Chinese Consulate

Tzi Ma — Cheng Zhi (Chief of Security for the consul; questions several CTU employees)
Peter Chin — Lee Jong (former research scientist working for Marwan; takes refuge at the consulate)
François Chau — Koo Yin (Chinese Consul in Los Angeles)
Ping Wu — Su Ming (Chinese Deputy Consul; accuses Palmer's people of infiltrating the embassy to get to Lee)

Miscellaneous characters

Lukas Haas — Andrew Paige (Computer programmer; friend of Chloe O'Brian)
Leighton Meester — Debbie Pendleton (Behrooz Araz's American girlfriend)
Angela Goethals — Maya Driscoll (Daughter of Erin Driscoll)
Roxanne Day — Jen Slater (Tony's girlfriend)
T.J. Thyne — Jason Girard (Camper who finds the "football"; husband of Kelly)
Claudette Mink — Kelly Girard (Camper who finds the "football"; wife of Jason)
Evan Handler — David Weiss (Attorney from Amnesty Global who demands Joe Prado's release)
Tim Kelleher — Greg Merfield (Secret service agent sent to arrest Jack)
Lina Patel — Nabilla (Girlfriend of Sabir; suspects her boyfriend may be involved with terrorists)
Phyllis Lyons — Karen Pendleton (Debbie's mother)
Michael Benyaer — Naseem (Dina's brother; unaware of the terrorist plot)

Season Five

Bauer's family and associates

Kiefer Sutherland — Jack Bauer (former CTU agent; alias Frank Flynn; occasionally works at the local oil field)
Elisha Cuthbert — Kim Bauer (former CTU agent; Jack's daughter)
Kim Raver - Audrey Raines (Jack's girlfriend)
Connie Britton — Diane Huxley (Owner of the house where Jack rents a room)
Brady Corbet — Derek Huxley (Diane's son)
C. Thomas Howell — Barry Landes (Kim Bauer's therapist and current boyfriend)

Jack's Inner Circle

Mary Lynn Rajskub — Chloe O'Brian (CTU agent) see also CTU / Division / Homeland Security
Reiko Aylesworth — Michelle Dessler (former CTU Division Deputy Director; Tony's wife)
Carlos Bernard — Tony Almeida (former CTU Director; Michelle's husband)

CTU / Division / Homeland Security

James Morrison — Bill Buchanan (CTU Director/ CTU Division Director)
Mary Lynn Rajskub — Chloe O'Brian (CTU agent)
Carlo Rota — Morris O'Brian (Chloe O'Brian's ex-husband)
Sean Astin — Lynn McGill (Division; takes over as CTU Director)
Kim Raver — Audrey Raines (DOD liaison for CTU)
Louis Lombardi — Edgar Stiles (CTU agent)
Roger Cross — Curtis Manning (CTU agent; Head of Field Ops)
Jayne Atkinson — Karen Hayes (Homeland Security official)
Stephen Spinella — Miles Papazian (Hayes' assistant)
Jonah Lotan — Spensor Wolff (CTU agent)
Danielle Burgio — Carrie Bendis (CTU agent)
Kate Mara — Shari Rothenberg (CTU agent)
Marty Papazian — Rick Burke (CTU interrogator)
Thomas Vincent Kelly — Marc Besson (CTU doctor)
Jenny Levine — Valerie Harris (Homeland Security agent)
Peter Asle Holden — Harry Swinton (CTU security guard)
Carl Edwards — Jim Hill (Homeland Security official)
Josie Di Vincenzo — CTU Agent Mara
David Joyner — CTU S.W.A.T Agent Jones
Michael Roddy — CTU S.W.A.T Agent Smith
Alex Castillo — CTU Guard Hugo
Marci Michelle — CTU Agent Jackie
Thomas Howell — CTU Guard Henry
Billy Chamberlain — CTU Agent Fitzpatrick

Sentox Nerve Gas Conspiracy

Gregory Itzin — Charles Logan (President of the United States; manipulator of the conspiracy; main villain)
Paul McCrane — Graem (apparent mastermind)
Peter Weller — Christopher Henderson (federal agent who recruited Jack; key conspirator)
Geraint Wyn Davies — James Nathanson (middleman between Logan and Cummings)
John Allen Nelson — Walt Cummings (Logan’s Chief of Staff; supposed scapegoat in the conspiracy)
Jeff Kober — Haas (assassin who killed David Palmer)
Robert Rusler — Hank (assassin sent to kill Jack)
Jose Zuniga — Joseph Melina (associate of Henderson)
Sky Soleil — John Stratton (security for Henderson)

Federal Government officials, employees, and associates

Gregory Itzin — Charles Logan (President of the United States)
Jean Smart — Martha Logan (First Lady; Logan's wife)
Ray Wise — Hal Gardner (Vice-President of the United States)
John Allen Nelson — Walt Cummings (Logan’s Chief of Staff)
Jude Ciccolella — Mike Novick (Senior advisor and later Chief of Staff)
Glenn Morshower — Aaron Pierce (Secret Service agent)
William Devane — James Heller (United States Secretary of Defense, Audrey Raines' father)
Sandrine Holt — Evelyn Martin (Assistant to Martha Logan)
Alla Korot — Suzanne Cummings (Walt Cumming's wife)
Anita Finlay — Wendy Brown (Logan's Aide)
Robb Reesman — Dr. Hill (Martha's doctor)
Taylor Nichols — Burke (Communications office worker)
David McDivitt — White House staffer

Palmer family

Dennis Haysbert — David Palmer (Former President of the United States)
D.B. Woodside — Wayne Palmer (David Palmer's Brother; Former White House Chief of Staff)

Russian Federation

Nick Jameson — Yuri Suvarov (Russian President)
Kathleen Gati — Anya Suvarov (Russian First Lady)

Russian separatists and collaborators

Julian Sands — Vladimir Bierko (billionaire; separatist leader)
Mark Sheppard — Ivan Erwich (chemical engineer; sleeper within the hostages)
David Dayan Fisher — Anton Beresch (holds Ontario airport hostage)
Alex Kuznetsov — Ostroff (terrorist; gasses CTU)
Stana Katic — Collette Stenger (information broker)
Patrick Bauchau — Jacob Rossler (systems programmer; associate of Erwich)
Timothy Omundson — Polakov (terrorist; gasses a shopping mall)
Marat Oyvetsky — Viktor Grigorin (terrorist; gasses Tyler Memorial Hospital)
Taras Los — Chevensky (contact at Ontario airport)
Robert Maffia — Andrei (terrorist; member of Erwich's crew)
Timothy V. Murphy — Schaeffer (Erwich's driver)
Yorgo Constantine — Mikhael (Bierko henchman)
Oleg Taktarov — Sergei Sratkin (separatist)

People's Republic of China

Tzi Ma — Cheng Zhi (Chief of Security, Chinese Consulate - Los Angeles)

Miscellaneous Feds/Police/Medical

John G. Connolly — Sgt. Mike McLaren

Miscellaneous characters

Penny Balfour — Jenny McGill (Lynn McGill's sister)
Henry Ian Cusick — Theo Stoller (German intelligence agent involved with Collette)
Matthew Boylan — Dwayne Thompkins (Jenny McGill's boyfriend)
Angela Sarafyan — Inessa Kovalevsky (Jacob Rossler's 15-year-old Ukrainian sex slave)
Skylar Roberge — Amy Martin (Evelyn Martin's daughter)
JoBeth Williams — Miriam Henderson (Christopher Henderson's wife)
Pia Artesona — Joanne Tandy (Christopher Henderson's secretary)
Channon Roe — Cal (autoshop worker forced to open Sentox canisters)
Andrew Hawkes — Scott Evans (the 'last minute replacement' co-pilot who had the recording)
Tom Wright — Admiral Kirkland (highest ranking member of the US Navy)
Jeremy Ray Valdez — Petty Officer Tim Rooney (the only sub survivor who helps Jack get in)

Season Six

Bauer's family and associates

Kiefer Sutherland — Jack Bauer ( CTU agent)
James Cromwell — Phillip Bauer (Jack's father;mastermind behind events of Day 5, as well as being involved in Day 6's events; main villain)
Paul McCrane — Graem Bauer (Jack's brother; involved in events of Day 5; involved in selling nukes to Fayed and Gredenko)
Rena Sofer — Marilyn Bauer (Jack's sister-in-law)
Evan Ellingson — Josh Bauer (Jack's nephew)
Kim Raver — Audrey Raines (Jack's girlfriend)
Mark Bramhall — Sam (Bauer family household assistant)

CTU / Division / District

James Morrison — Bill Buchanan (CTU Director)
Marisol Nichols — Nadia Yassir (CTU Second-in-Command)
Mary Lynn Rajskub — Chloe O'Brian (CTU agent)
Carlo Rota — Morris O'Brian (Chloe O'Brian's ex-husband and CTU Analyst)
Roger Cross — Curtis Manning (CTU agent; Head of Field Ops)
Eric Balfour — Milo Pressman (Chloe's ex-boyfriend and CTU Analyst)
Ricky Schroder — Mike Doyle (CTU agent; Head of Field Ops)
Marty Papazian — Rick Burke (CTU Interogator)
Spencer Garrett — Ben Kram (supervisor from Division)
James C. Victor — Hal Turner (CTU Agent)
Robb Weller — CTU Field Agent
Brian Silverman — CTU Field Agent
Lauten Richard Metcalfe — CTU Agent Shavers
Lex Cassar — CTU Agent Ryan
Merik Tadros — CTU Agent Jamal

Federal Government officials, employees, and associates

D.B. Woodside — Wayne Palmer (President of the United States)
Peter MacNicol — Tom Lennox (President Palmer's Chief of Staff)
Regina King — Sandra Palmer (Lawyer and sister of Wayne Palmer)
Powers Boothe — Noah Daniels (Vice-President of the United States)
Chad Lowe — Reed Pollock (Deputy Chief of Staff)
Jayne Atkinson — Karen Hayes (National Security Advisor)
Kari Matchett — Lisa Miller (Vice-President Daniels' Chief of Staff)
Bob Gunton — Ethan Kanin (Secretary of Defense)
Michael Shanks — Mark Bishop (Lobbyist)
Michael Reilly Burke — Bruce Carson (Reed's consipirator)
Jim Holmes — Arthur Welton (President Palmer's Doctor)
D.C. Douglas — Blake Simon (President Palmer's Advisor)
Matt McKenzie — Agent Hollister (Secret Service Agent)
Andrea Grano — Ellen Price (President Palmer's press secretary)
Jolene Kim — Melinda (President Palmer's assistant)
Jamison Jones — Dan (Head of Secret Service)
William Bumiller — Agent Lowry (Secret Service Agent)
Matt Bataglia — Agent Jennings (Secret Service Agent)
Peter Iannone — Homeland Security Official
Kurt Hueig — Homeland Security Official
Myra Mawk — Homeland Security Official
Ray Laska — Attorney General Graves

People's Republic of China

Tzi Ma — Cheng Zhi (Chief of Security, Chinese Consulate, Los Angeles)
Ian Anthony Dale — Zhou (Cheng's Mercenary)

Russian/Arab Terrorists

Adoni Maropis — Abu Fayed (Leader of terrorist plot)
Rade Šerbedžija — Dmitri Gredenko (Russian nationalist, Fayed's chief accomplice)
David Hunt — Darren McCarthy (An accomplice of Fayed)
Kal Penn — Ahmed Amar (Works for Fayed)
Shaun Majumder — Hasan Numair (Works for Fayed)
Missy Cryder — Rita (McCarthy's girlfriend)
Sam Kanater — Mohmar Habib (Fayed's influential sponsor from their unnamed country)
Dylan Kenin — Victor (Drone pilot working for Gredenko)
Patrick Sabongui — Nasir (Works for Fayed)
Steven Schub — Samir (Works for Fayed)
Said Faraj — Halil (Works for Fayed)
Sammy Sheik — Masheer (Works for Fayed)
Adrian R'Mante — Omar (Works undercover for Fayed)

Phillip's Conspirators/BXJ Technologies

James Cromwell — Phillip Bauer (Mastermind behind events of Day 5, as well as being involved in Day 6's events; main villain)
Paul McCrane — Graem Bauer (Involved in events of Day 5; involved in selling nukes to Fayed
Maury Sterling — Kozelek Hacker (Henchman working for Phillip)
Adrian Neil — Liddy (One of Phillip's Associates)

Anacostia Detention Facility

Al Faris — Salim (Man who knows of Fayed's plans)
Haaz Sleiman — Heydar (Man who is with Salim)

Russian Federation

John Noble — Anatoly Markov (Russian Consul, Los Angeles)
Nick Jameson — Yuri Suvarov (Russian President)
Kathleen Gati — Anya Suvarov (Russian First Lady)

Miscellaneous characters

William Devane — James Heller (Former Secretary of Defense)
Glenn Morshower — Aaron Pierce (Former Secret Service agent)
Gregory Itzin — Charles Logan (Former President of the United States)
Jean Smart — Martha Logan (Former First Lady of the United States)
Alexander Siddig — Hamri Al-Assad (Former terrorist attempting to legitimize his organization and stop Abu Fayed)
Harry Lennix — Walid Al-Rezani (Head of Islamic-American Alliance; client and love interest of Sandra Palmer)
Raphael Sbarge — Ray Wallace (neighbor of Ahmed Amar)
Megan Gallagher — Jillian Wallace (neighbor of Ahmed Amar)
Michael Angarano — Scott Wallace (neighbor of Ahmed Amar, son of Ray & Jillian)
Chris Kramer — Stuart Pressman (Milo Pressman's brother)
Pat Healy — Marcus (Store Owner)
Eric Bruskotter — Stan (Amar's and Wallace's neighbor)
Nancy Cartwright — Jeannie Tyler (Morris's former AA Sponsor)
Devon Gummersall — Mark Hauser (Contractor hired by Gredenko)
Scott Michael Campbell — Brady Hauser (Autistic Brother of Mark)

Season Seven

Kiefer Sutherland — Jack Bauer
Cherry Jones — Allison Taylor (President of the United States)
Carlo Rota — Morris O'Brian
Mary Lynn Rajskub — Chloe O'Brian
James Morrison — Bill Buchanan