Lance Reddick
as Lt. Cedric Daniels
Sonja Sohn
as Det. Shakima "Kima" Greggs
Dominic West
as Off. James "Jimmy" McNulty
Clarke Peters
as Det. Lester Freamon
Domenick Lombardozzi
as Det. Thomas "Herc" Hauk
Wendell Pierce
as Det. William "Bunk" Moreland
Seth Gilliam
as Det. Ellis Carver
Jim True-Frost
as Det. Roland "Prez" Pryzbylewski
John Doman
as Dep. Comm. William A. Rawls
Deirdre Lovejoy
as Assistant State's Attorney Rhonda Pearlman
Michael K. Williams
as Omar Little
Andre Royo
as Reginald "Bubbles" Cousins
Idris Elba
as Russell "Stringer" Bell
Frankie Faison
as Ervin Burrell
Aidan Gillen
as Councilman Thomas "Tommy" Carcetti
J.D. Williams
as Preston "Bodie" Broadus
Wood Harris
as Avon Barksdale
Jamie Hector
as Marlo "Black" Stanfield
Corey Parker Robinson
as Det. Leander Sydnor
Gbenga Akinnagbe
as Chris Partlow
Robert Wisdom
as Maj. Howard "Bunny" Colvin
Isiah Whitlock Jr.
as State Sen. R. Clayton "Clay" Davis
Reg E. Cathey
as Norman Wilson
Michael Kostroff
as Maurice "Maury" Levy
Jermaine Crawford
as Duquan "Dukie" Weems
Chad L. Coleman
as Dennis "Cutty" Wise
Amy Ryan
as Off. Beatrice "Beadie" Russell
Lawrence Gilliard Jr.
as D'Angelo Barksdale
Glynn Turman
as Mayor Clarence V. Royce
Paul Ben-Victor
as Spiros "Vondas" Vondopoulos
Mack Wilds
as Michael Lee
Chris Bauer
as Frank Sobotka
Neal Huff
as Chief of Staff Michael Steintorf
Michelle Paress
as Alma Gutierrez
Clark Johnson
as City Editor Augustus "Gus" Haynes
Tom McCarthy
as Scott Templeton
Delaney Williams
as Sergeant Jay Landsman