Douglas Steven "Doug" Heffernan is a fictional character and the protagonist of the American sitcom The King of Queens. The character has also appeared in Everybody Loves Raymond, Becker, and Cosby. He is portrayed by Kevin James, whose stand-up comedy background inspired the comedic style of the show. Doug, an often immature 'average Joe', lives in Rego Park, Queens, with his wife Carrie Heffernan and his father-in-law Arthur Spooner.

The King of Queens is an American television sitcom that ran on CBS from September 21, 1998, to May 14, 2007, a total of nine seasons and 207 episodes. The series was created by Michael J. Weithorn and David Litt, who also served as the show's executive producer, and stars Kevin James and Leah Remini as Doug and Carrie Heffernan, a working-class couple living in Rego Park, Queens. All the episodes were filmed in front of a live studio audience.