What is the name of the famous detective created by Arthur Conan Doyle?

The famous detective created by Arthur Conan Doyle is Sherlock Holmes.

Holmes first appeared in A Study in Scarlet, published in 1887. Doyle portrayed him as a consulting detective who solved difficult cases through close observation, deductive reasoning, scientific knowledge, and careful attention to details that others overlooked. His companion and chronicler, Dr. John Watson, narrates most of the stories.

Holmes lived at 221B Baker Street in London, although the address became famous largely through the fiction rather than through a single original real-world residence. His characteristic deerstalker hat and curved pipe are strongly associated with later illustrations and adaptations, not consistently with Doyle's original descriptions.

Common mix-ups include Hercule Poirot, created by Agatha Christie, Father Brown, created by G. K. Chesterton, and Philip Marlowe, created by Raymond Chandler. Holmes is also sometimes called the first modern consulting detective, reflecting his lasting influence on crime fiction.