List of detectives, constables, and agents in Sherlock Holmes

The following is a list of police inspectors, private detectives, police constables, and agents mentioned in the Sherlock Holmes stories by Sir Arthur Conan Doyle. The stories also refer to a number of such characters who are unnamed.
== Detectives ==
Detective 	Stories
Inspector Algar, "my friend of the Liverpool force." Doyle, Arthur Conan. The Complete Sherlock Holmes. Garden City, N.Y.: Doubleday, 1930. p 897.	"The Adventure of the Cardboard Box"
Inspector Bardle of the Sussex Constabulary 	"The Adventure of the Lion's Mane"
Mr Barker, a private detective 	"The Adventure of the Retired Colourman"
Inspector Barton of Scotland Yard 	"The Man with the Twisted Lip"
Inspector Baynes of the Surrey Constabulary 	"The Adventure of Wisteria Lodge"
Inspector Bradstreet of Scotland Yard 	"The Man with the Twisted Lip", "The Adventure of the Blue Carbuncle", and "The Adventure of the Engineer's Thumb"
Inspector Sam Brown of Scotland Yard 	"The Sign of the Four"
Monsieur Dubuque of the Paris police 	"The Adventure of the Naval Treaty"
Birdy Edwards of Pinkerton’s Detective Agency 	"The Valley of Fear"
Inspector Forbes of Scotland Yard 	"The Adventure of the Naval Treaty"
Inspector Forrester of Scotland Yard 	"The Adventure of the Reigate Puzzle"
Inspector Gregory of Scotland Yard 	"The Adventure of Silver Blaze"
Inspector Tobias Gregson of Scotland Yard 	"A Study in Scarlet", "The Adventure of the Greek Interpreter", "The Adventure of Wisteria Lodge", and "The Adventure of the Red Circle"
Inspector Hill of Scotland Yard 	"The Adventure of the Six Napoleons"
Inspector Stanley Hopkins of Scotland Yard 	"The Adventure of Black Peter", "The Adventure of the Golden Pince-Nez", "The Adventure of the Missing Three-Quarter" (mentioned), and "The Adventure of the Abbey Grange"
Inspector Althelney Jones of Scotland Yard 	"The Sign of the Four"
Inspector Peter Jones of Scotland Yard 	"The Red-Headed League"
Inspector Lanner of Scotland Yard 	"The Adventure of the Resident Patient"
Inspector G. Lestrade of Scotland Yard 	"A Study in Scarlet", "The Hound of the Baskervilles", "The Boscombe Valley Mystery", "The Adventure of the Noble Bachelor", "The Adventure of the Empty House", "The Adventure of the Norwood Builder", "Charles Augustus Milverton", "The Six Napoleons", "The Adventure of the Second Stain", "The Cardboard Box", "The Adventure of the Bruce-Partington Plans", "The Disappearance of Lady Frances Carfax", and "The Adventure of the Three Garridebs"
LeBrun, the French agent 	"The Adventure of the Illustrious Client"
Wilson Hargreave of the New York Police Bureau 	"The Adventure of the Dancing Men"
Mr Leverton of Pinkerton’s Detective Agency 	"The Adventure of the Red Circle"
Inspector Alec MacDonald of Scotland Yard 	"The Valley of Fear"
Inspector MacKinnon of Scotland Yard 	"The Adventure of the Retired Colourman"
Inspector Martin of the Norfolk Constabulary 	"The Adventure of the Dancing Men"
Inspector White Mason of the Sussex Constabulary 	"The Valley of Fear"
Inspector Merivale of Scotland Yard 	"The Adventure of Shoscombe Old Place"
Inspector Montgomery of Scotland Yard 	"The Adventure of the Cardboard Box"
Inspector Morton of Scotland Yard 	"The Adventure of the Dying Detective"
Inspector Patterson of Scotland Yard 	"The Final Problem"
François le Villard of the French Detective Service 	"The Sign of the Four"
Fritz von Waldbaum, the well-known specialist of Danzig 	"The Adventure of the Naval Treaty"
Inspector Youghal of Scotland Yard 	"The Adventure of the Mazarin Stone"
== Constables ==
Constable 	Stories
Constable Anderson 	"The Adventure of the Lion's Mane"
Constable Barrett 	"The Adventure of the Second Stain"
Constable Cook 	"The Five Orange Pips"
Sergeant Coventry of the Hampshire Constabulary	"The Problem of Thor Bridge"
Constable Downing of the Surrey Constabulary 	"Wisteria Lodge"
Officer Evans 	"The Valley of Fear"
Constable MacPherson 	"The Second Stain"
Constable Harry Murcher 	"A Study in Scarlet"
Constable Pollock 	"The Adventure of the Stockbroker's Clerk"
Constable John Rance 	"A Study in Scarlet"
Sergeant Tuson of the City Police 	"The Adventure of the Stockbroker’s Clerk"
Police-constable Walters of the Surrey Police 	"Wisteria Lodge"
Sergeant Wilson of the Sussex Constabulary 	"The Dancing Men"
Constable Wilson 	"The Golden Pince-Nez"
== Agents ==
Agent 	Stories
The Baker Street Irregulars (BSI), a group of young boys commonly referred to as "street Arabs". 	"A Study in Scarlet", "The Sign of the Four", and "The Adventure of the Crooked Man"
Billy, a page at Holmes’ rooms in Baker Street 	"Valley of Fear", "The Adventure of the Mazarin Stone", and "Thor Bridge"
Cartwright, "the little chap at the express office".Doyle, Arthur Conan. The Complete Sherlock Holmes. Garden City, N.Y.: Doubleday, 1930. p 741. 	"The Hound of the Baskervilles"
Mycroft Holmes, Sherlock’s brother, aka The British Government. 	"The Greek Interpreter", "The Final Problem", "The Empty House", and "The Bruce-Partington Plans"
Shinwell Johnson, aka "Porky" Johnson, he acted as Holmes’ "agent in the huge criminal underworld of London..." Doyle, Arthur Conan. The Complete Sherlock Holmes. Garden City, N.Y.: Doubleday, 1930. p 987.	"The Illustrious Client"
Lomax, sublibrarian of the London Library and Watson’s friend. 	"The Illustrious Client"
Martha, employed as housekeeper by Von Bork, but Holmes’ agent. 	"His Last Bow"
Mercer, “He is my general utility man who looks up routine business.” Doyle, Arthur Conan. The Complete Sherlock Holmes. Garden City, N.Y.: Doubleday, 1930. p 1079. 	"The Creeping Man"
Peterson, a London commissionaire 	"The Blue Carbuncle"
Langdale Pike, a “human book of reference upon all matters of social scandal.” Doyle, Arthur Conan. The Complete Sherlock Holmes. Garden City, N.Y.: Doubleday, 1930. p 1038. 	"The Three Gables"
Pompey, a draghound 	"The Missing Three-Quarter"
Fred Porlock, an anonymous source of information from within Professor Moriarty’s gang. 	"The Valley of Fear"
Old Sherman, taxidermist and owner of Toby. 	"The Sign of the Four"
Simpson, (Baker Street Irregulars) 	"The Adventure of the Crooked Man"
Toby, a dog, owned by Old Sherman, with a remarkable talent for tracking. 	"The Sign of the Four"
Wiggins, (Baker Street Irregulars) 	"A Study in Scarlet" and "The Sign of the Four"
== Notes ==
Category:Police
Category:Armed Forces and Law Enforcement