Delaney Williams
(Sergeant Jay Landsman),
John Doman
(Deputy Commissioner for Operations William A. Rawls),
Idris Elba
(Russell 'Stringer' Bell),
Frankie Faison
(Acting Commissioner Ervin H. Burrell),
Seth Gilliam
(Sergeant Ellis Carver),
Wood Harris
(Avon Barksdale),
J.D. Williams
(Preston 'Bodie' Broadus),
Domenick Lombardozzi
(Detective Thomas 'Herc' Hauk),
Deirdre Lovejoy
(A.S.A. Rhonda Pearlman),
Clarke Peters
(Detective Lester Freamon),
Wendell Pierce
(Detective William 'Bunk' Moreland),
Lance Reddick
(Lieutenant Cedric Daniels),
Corey Parker Robinson
(Detective Leander Sydnor),
Andre Royo
(Reginald 'Bubbles' Cousins),
Sonja Sohn
(Detective Shakima 'Kima' Greggs),
Jim True-Frost
(Detective Roland 'Prez' Pryzbylewski),
Dominic West
(Detective James 'Jimmy' McNulty),
Michael Kenneth Williams
(Omar Little)