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Delaney Williams (born December 12, 1962) is an American character actor from Washington, D.C. He appeared on the HBO drama The Wire (2002–2008) as a recurring guest star playing homicide sergeant Jay Landsman. He also had a small role on HBO's mini-series The Corner (2000), which brought him to the attention of the producers who worked on The Corner prior to casting The Wire. He has also made appearances on such shows as , , Veep, Cold Case, and The Punisher.
| +Television roles | |||
| 1998 | Joey Grimaldi | 1 episode | |
| 2000 | The Corner | Scale Guy | 2 episodes |
| 2002–2008 | The Wire | Sgt. Jay Landsman | 45 episodes |
| 2003 | The West Wing | Reporter | 1 episode Uncredited |
| 2004 | Ernie Dominguez | 1 episode | |
| 2004 | Cold Case | Fred Calvin | 1 episode |
| 2010–2020 | Defense Attorney John Buchanan | 14 episodes | |
| 2013 | Veep | Joe Walker | 1 episode |
| 2016 | Blue Bloods | Bureau Chief Dennis Egan | 3 episodes |
| 2017 | Elementary | Joseph Tommolino | 1 episode |
| 2017 | The Punisher | O'Connor | 3 episodes |
| 2022 | We Own This City | Kevin Davis | 6 episodes |
| 2025 | Chicago PD | Warden Scott | 1 episode |
| 1998 | Pecker | Construction Worker | |
| 1999 | >Falling to Peaces | Ed Thomas | |
| 2000 | Eat Me! | Daryl | Credited as Bill Delaney |
| 2003 | Head of State | Teamster | |
| 2004 | Ladder 49 | Fireman Bill | |
| 2013 | Beneath the Harvest Sky | James | |
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