The third season of the television series The Wire of 12 episodes first aired in the United States on HBO in 2004, from September 19 to December 19. It introduces Baltimore's local politicians and the upstart drug dealing Stanfield organization while continuing to examine the Barksdale Organization and the Baltimore Police Department.

The Wire is an American crime drama television series created and primarily written by American author and former police reporter David Simon. The series was broadcast by the cable network HBO in the United States. The Wire premiered on June 2, 2002, and ended on March 9, 2008, comprising 60 episodes over five seasons. The idea for the show started out as a police drama loosely based on the experiences of Simon's writing partner Ed Burns, a former homicide detective and public school teacher.