Oz was an American television drama series created and written by Tom Fontana. It was the first one-hour dramatic television series to be produced by HBO. It aired for six seasons between 1997 and 2003. It shares several cast and crew members with The Wire.
- J.D. Williams played Kenny "Bricks" Wangler on Oz and Preston "Bodie" Broadus on The Wire.
- Domenick Lombardozzi played Ralph Galino on Oz and Thomas "Herc" Hauk on The Wire.
- Seth Gilliam played ex-corrections officer Clayton Hughes on Oz and Sergeant Ellis Carver on The Wire.
- Lance Reddick plays undercover detective Johnny Basil whose cover identity is Desmond Mobay on Oz and ascendant police commander Cedric Daniels on The Wire.
- John Doman played Edward Galson on Oz and caustic police commander William Rawls on The Wire.
- Method Man played Carlton "Tug" Daniels on Oz and East side drug lieutenant Melvin "Cheese" Wagstaff on The Wire.
- Tom Mardirosian played Agamemnon Busmalis on Oz and FBI agent Kristos Koutris on The Wire.
- Michael Potts played Reinhardt in the Oz episode "Medium Rare" and Brother Mouzone on The Wire.
- Clarke Peters played Afsana in the Oz episode "The Bill of Wrongs" and Lester Freamon on The Wire.
- Tim McAdams played Johnny Post on Oz and a motorist and school teacher in The Wire episode "Transitions".
- Derrick Simmons played Billie Keane and did stunt work on Oz and did stunt work on The Wire.
- Lawrence Cameron Steele plays an Aryan in the Oz finale "Exuent Omnes" and a Western district shift lieutenant in the third season of The Wire.
- Michael Rivera played Pablo Rosa in Oz's final season, and cameoed on the Wire's final season, relaying news of Butchie's death to Omar in Cuba.
- Reg E. Cathey played Warden Martin Querms on Oz and political aide Norman Wilson on The Wire.
- Wood Harris played Officer Gordon Wood in the Oz episode "Plan B" and Avon Barksdale on The Wire.
- Cyrus Farmer played Officer Adrian Johnson on Oz and Devar Manigault on The Wire.
- Kristin Rohde played Officer Claire Howell on Oz and a reporter on The Wire.
- Curtis L. McLarin played Officer Lonnie Smith on Oz and a florist in The Wire episode "Transitions".
- Toni Lewis played dog trainer Alicia Hinden on Oz and an FBI agent in The Wire.
- Frankie Faison played Cornelius Keane in the Oz episode "Capital P" and Ervin Burrell in The Wire.
- Michael Hyatt played Sadia Khayn in the Oz episode "Out O' Time" and Brianna Barksdale in The Wire.
- Alexa L. Fogel was the casting director for both Oz and The Wire.
- Anthony Hemingway worked as first assistant director on Oz and later on The Wire eventually becoming an episodic director for The Wire.
- Alex Zakrzewski was the director of photography on Oz and later became and episodic director for both Oz and The Wire.
- Gloria Muzio directed an episode of both Oz and The Wire.
- Leslie Libman directed an episode of both Oz and The Wire.