D
- D (plural "D's")
- (Australia) – An undercover police officer.Detective or Detectives
- Danthay
- Nepal, a cop with a baton (known locally as a "danda").
- Demon
- New Zealand, police detectives.
- Dibble or The Dibble
- Arises from the police officer in the Hanna-Barbera animated programme Top Cat. Most commonly used in Manchester.
- Dicks
- Slang for detectives. Apparently originally coined in Canada and brought south by rumrunners during Prohibition. The fictional comic strip character Dick Tracy was given the first name of "Dick" in token of its being a slang expression for "detective". Female detectives have been called Dickless Tracy's or DT's.
- Divvy van
- Australian Slang for Police vehicle used for transporting criminals. Named after the protective 'division' between the driver and the villains.
- Do-do nutters or The Do-dos
- Arises from the stereotype of police officers eating donuts.
- Dogs
- used in many European languages as an insulting term for police similar to pig in English.
- DRC or The DRC
- Dirty Rotten Cop(per).
- Droid or Roham-droid
- Hungarian slang for riot police, based on Star Wars (in Hungarian, rendőrség is police, rendőr is police officer, rohamrendőr is riot police officer, roham-droid is super battle droid in Star Wars).
- Ducks and Geese
- Cockney rhyming slang for police.
- Doughnut Commando
- Used by younger or physically fit officers to refer to older or out-of-shape colleagues.
- Doughnut Patrol
- Derived from the video game "Godfather 2".
- Doughnut Shop
- Because the stereotypical cop will be seen eating doughnuts.
- Doughnut Squad
- Derived from an episode of "The Sopranos". Tony Soprano is in talks with Ron Zellman and he refers to the police as "The Doughnut Squad".
Read more about this topic: List Of Police-related Slang Terms