• 
  Brad Anderson

  regizor
• 
  Joe Chappelle

  regizor
• 
  Clark Johnson

  regizor
• 
  Dominic West

  regizor

• 
  Dominic West

  James 'Jimmy' McNulty / James 'Jimmy' McNulty
• 
  John Doman

  Comandantul William A. Rawls
• 
  Wendell Pierce

  Det. William 'Bunk' Moreland
• 
  Joey Perillo

  Medical Examiner Front Desk (2 episodes, 2008)

• 
  Neal Huff

  Chief of Staff Michael Steintorf (12 episodes, 2006-2008)
• 
  Richard Price

  Library Discussion Leader (1 episode, 2003)
• 
  Wood Harris

  Avon Barksdale (38 episodes, 2002-2008)
• 
  Dennis Hill

  Det. Christeson (5 episodes, 2008)
• 
  Dionne Audain

  Social Worker (2 episodes, 2008)
• 
  Chad L. Coleman

  Dennis 'Cutty' Wise (26 episodes, 2004-2008)
• 
  Joe Gerety

  State Trooper (1 episode, 2002)

• 
  Reg E. Cathey

  Norman Wilson (23 episodes, 2006-2008)
• 
  Melvin Jackson Jr.

  Bernard (4 episodes, 2004)
• 
  Tristan Wilds

  Michael Lee (23 episodes, 2006-2008)
• 
  Nathan Corbett

  Donut (8 episodes, 2006)
• 
  Michael Hyatt

  Brianna Barksdale (12 episodes, 2002-2006)
• 
  Michael Rivera

  Renaldo's Friend (1 episode, 2008)
• 
  Gbenga Akinnagbe

  Chris Partlow  (30 episodes, 2002-2008)
• 
  Fredro Starr

  Marquis 'Bird' Hilton  (3 episodes, 2002-2003)
• 
  Ramon Rodriguez

  Renaldo (8 episodes, 2006-2008)
• 
  Cleve Gray

  Crime Scene Technician (1 episode, 2004)
• 
  Peter Gerety

  Judge Daniel Phelan (15 episodes, 2002-2008)
• 
  Hassan Johnson

  Roland 'Wee-Bey' Brice (19 episodes, 2002-2008)
• 
  Nina Hodoruk

  State's Atty. Kendall Remnick (1 episode, 2004)
• 
  Domenick Lombardozzi

  Det. Thomas 'Herc' Hauk  (60 episodes, 2002-2008)
• 
  Method Man

  Melvin 'Cheese' Wagstaff  (13 episodes, 2003-2008)
• 
  Boris McGiver

  Lt. Charles Marimow (6 episodes, 2006)
• 
  Sonja Sohn

  Det. Shakima 'Kima' Greggs (60 episodes, 2002-2008)
• 
  Frankie Faison

  Commissioner Ervin H. Burrell  (47 episodes, 2002-2008)
• 
  Amy Ryan

  Off. Beatrice 'Beadie' Russell (20 episodes, 2003-2008)
• 
  Anthony Mangano

  Det. Kevin Infante (1 episode, 2008)
• 
  Jamie Hector

  Marlo Stanfield (32 episodes, 2004-2008)
• 
  Robert F. Colesberry

  Det. Ray Cole (10 episodes, 2002-2003)
• 
  Nakia Dillard

  Off. Lambert (1 episode, 2004)
• 
  Karen Vicks

  Gerry (7 episodes, 2006)
• 
  Tom Townsend

  Grand Jury Member (5 episodes, 2008)
• 
  Antonio D. Charity

  Dwight Tilghman (3 episodes, 2003)
• 
  Chris Bauer

  Frank Sobotka (12 episodes, 2003)
• 
  Patrick Michael Strange

  Reporter (7 episodes, 2008)
• 
  Keith Flippen

  Bruce DiBiago  (3 episodes, 2003)
• 
  Dennis Lehane

  Off. Sullivan (1 episode, 2004)
• 
  Merritt Wever

  Prissy (1 episode, 2003)
• 
  Ken Arnold
• 
  Joe Hansard

  Nathan Levi Boston (1 episode, 2008)
• 
  Nitin Adsul

  Indian Shop Owner (1 episode, 2006)
• 
  Tim McAdams

  Motorist (1 episode, 2008)
• 
  Christopher Mann

  Councilman Anthony Gray  (12 episodes, 2004-2006)
• 
  Clark Johnson

  City Editor Augustus 'Gus' Haynes (10 episodes, 2008)
• 
  Nat Benchley

  Det. Augustus Polk (6 episodes, 2002-2008)
• 
  Aidan Gillen

  Councilman Thomas 'Tommy' Carcetti  (35 episodes, 2004-2008)
• 
  Michael Kostroff

  Maurice 'Maury' Levy (25 episodes, 2002-2008)
• 
  Brian Anthony Wilson

  Det. Vernon Holley (18 episodes, 2002-2008)
• 
  Thomas M. Hagen

  Stevedore  (4 episodes, 2003-2006)
• 
  David Fonteno

  Poker Winner (1 episode, 2006)
• 
  Roscoe Orman

  Off. Oscar Requer (2 episodes, 2008)
• 
  Jonathon Ruckman

  Officer McFarlane (1 episode, 2006)
• 
  Gordana Rashovich
• 
  Dan Franko

  Officer Ginter (1 episode, 2006)
• 
  Jeff Wincott

  Johnny Weaver (1 episode, 2008)
• 
  Tony Devon

  Mr. Shopper (1 episode, 2006)
• 
  Seth Gilliam

  Sgt. Ellis Carver  (60 episodes, 2002-2008)
• 
  Clarke Peters

  Det. Lester Freamon (59 episodes, 2002-2008)
• 
  Jennifer Rouse

  Whiting's Secretary  (10 episodes, 2003-2008)
• 
  Pablo Schreiber

  Nickolas 'Nick' Sobotka  (13 episodes, 2003-2008)
• 
  Jarvis W. George

  'Ronnie Mo' Watkins  (3 episodes, 2002)
• 
  Carl Clemons

  Cheese's muscle (1 episode, 2006)
• 
  Jennifer Badger

  Slavic Drowning Victim (2 episodes, 2003)
• 
  Joe Inscoe

  FBI Deputy Director Arthur Tolan (1 episode, 2008)
• 
  Chris Ashworth

  Sergei 'Serge' Malatov (11 episodes, 2003-2008)
• 
  Curtis McClarin

  Florist (1 episode, 2008)
• 
  Tom McCarthy

  Scott Templeton (10 episodes, 2008)
• 
  Richard Belzer

  John Munch (1 episode, 2008)
• 
  Marlyne Barrett

  Council President Nerese Campbell (10 episodes, 2006-2008)
• 
  Juan-Pablo Veiza

  CSI Police Officer (1 episode, 2008)
• 
  Brian Distance

  Doctor (1 episode, 2006)
• 
  Andrew Roth

  Tim Packard (1 episode, 2008)
• 
  Jermaine Crawford

  Duquan 'Dukie' Weems (23 episodes, 2006-2008)
• 
  Anika C. McFall

  CSI Lab Tech (2 episodes, 2008)
• 
  John Wooten

  Officer Terry Garner (1 episode, 2004)
• 
  Paul Ben-Victor

  Spiros 'Vondas' Vondopoulos (17 episodes, 2003-2008)
• 
  Lance Reddick

  Lt. Cedric Daniels  (60 episodes, 2002-2008)
• 
  Sam Coppola

  Former Mayor 'Young Tony' (2 episodes, 2006)
• 
  Mark Joy

  Ed Bowers (3 episodes, 2006)
• 
  Jerome Ro Brooks

  Drug dealer (3 episodes, 2002)
• 
  Aaron Michael Lacey

  Maryland State Trooper  (2 episodes, 2002)
• 
  Bruce Kirkpatrick

  Roger Twigg (4 episodes, 2008)
• 
  Frederick Strother

  State Delegate Odell Watkins (16 episodes, 2004-2008)
• 
  Joilet Harris

  Off. Caroline Massey (7 episodes, 2004-2006)
• 
  Leo Fitzpatrick

  Johnny Weeks  (14 episodes, 2002-2004)
• 
  Paul Fahrenkopf

  High Roller  (2 episodes, 2006)
• 
  Manny Oliverez

  News Cameraman (1 episode, 2004)
• 
  James Ransone

  Chester 'Ziggy' Sobotka (12 episodes, 2003)
• 
  Sheila Cutchlow

  Miss Sheperdson (2 episodes, 2006)
• 
  Aubrohn King

  Reporter  (3 episodes, 2008)
• 
  Ian Bonds

  Drug Buyer in Car (1 episode, 2004)
• 
  Jefferson Smith

  Reporter (1 episode, 2008)
• 
  Shaun B'Laurent

  Vougn (1 episode, 2008)
• 
  Maestro Harrell

  Randy Wagstaff (14 episodes, 2006-2008)
• 
  Michael Mosley

  Raymond Wiley (1 episode, 2008)
• 
  Michael Ahl

  Detective  (24 episodes, 2003-2008)
• 
  Mike D. Anderson

  Ghost  (5 episodes, 2004-2008)
• 
  Idris Elba

  Russell 'Stringer' Bell (37 episodes, 2002-2004)
• 
  Ryan Sands

  Off. Lloyd 'Truck' Garrick (16 episodes, 2004-2008)
• 
  Jerry Walsh

  Mr. Lake (2 episodes, 2004)
• 
  Michael Kenneth Williams

  Omar Little (51 episodes, 2002-2008)
• 
  Robert Wisdom

  Howard 'Bunny' Colvin  (27 episodes, 2003-2008)
• 
  Brandon Fobbs

  Fruit (8 episodes, 2004-2006)
• 
  Melanie Nicholls-King

  Cheryl (15 episodes, 2002-2008)
• 
  Delaney Williams

  Sgt. Jay Landsman
• 
  Corey Parker Robinson

  Det. Leander Sydnor
• 
  Isiah Whitlock Jr.

  State Sen. R. Clayton 'Clay' Davis
• 
  Tray Chaney

  Malik 'Poot' Carr
• 
  Robert F. Chew

  Joseph 'Proposition Joe' Stewart
• 
  Michael Salconi

  Off. Michael 'Sanny' Santangelo
• 
  Anwan Glover

  Slim Charles
• 
  Felicia Pearson

  Felicia 'Snoop' Pearson
• 
  J.D. Williams

  Preston 'Bodie' Broadus
• 
  Deirdre Lovejoy

  Asst. State's Atty. Rhonda Pearlman
• 
  Andre Royo

  Reginald 'Bubbles' Cousins
• 
  Jim True-Frost

  Det. Roland 'Prez' Pryzbylewski