- This article is for Sir Arthur Conan Doyle's character. For other versions of the character see Versions of Inspector Lestrade.
- "All my instincts are one way, and all the facts are the other, and I much fear that British juries have not yet attained that pitch of intelligence when they will give the preference to my theories over Lestrade's facts."
- ―Sherlock Holmes [src]
Inspector G. Lestrade is a Scotland Yard detective appearing in several of the Sherlock Holmes stories by Sir Arthur Conan Doyle. Doyle used the name of an acquaintance from his days at the University of Edinburgh, a Saint Lucian whom Doyle disliked, although it has also been suggested that the name is an anagram of "Dearest L", a reference to Conan Doyle's first wife, Louisa. In "The Adventure of the Cardboard Box", Lestrade's first initial is revealed to be G, which may be a reference to the Prefect of Police known only as "G—" in the short story "The Purloined Letter" by Edgar Allan Poe which features Doyle's inspiration for Holmes, C. Auguste Dupin. Like Lestrade, "G—" also functions to provide the facts of the case. Lestrade is described as "a little sallow rat-faced, dark-eyed fellow" in A Study in Scarlet and "a lean, ferret-like man, furtive and sly-looking," in "The Boscombe Valley Mystery'.
While Holmes is initially dismissive of the man's capabilities, he would later come to call him "the best of the professionals" (The Hound of the Baskervilles), appreciating the man's tenacity in following any lead the amateur would give, likening it to that of a bloodhound or bulldog on a trail of blood (The Adventure of the Cardboard Box). Lestrade was skilled enough as an investigator to reach the rank of Inspector on his own, and recognise when he was out of his depth.
- A Study in Scarlet
- The Hound of the Baskervilles
- "The Adventure of the Cardboard Box"
- "The Adventure of the Noble Bachelor'
- "The Boscombe Valley Mystery"
- "The Adventure of the Empty House"
- "The Adventure of the Second Stain"
- "The Adventure of the Norwood Builder"
- "The Adventure of the Bruce-Partington Plans"
- "The Adventure of Charles Augustus Milverton"
- "The Adventure of the Six Napoleons"
- "The Disappearance of Lady Frances Carfax"
- "The Adventure of the Three Garridebs"
Dennis Hoey played Lestrade in the 1940s film series alongside Basil Rathbone's Holmes and Nigel Bruce's Watson. His role was mostly for comic relief, sharing the role of a bumbling old fool with Watson. He appeared in Sherlock Holmes and the Secret Weapon (1943), Sherlock Holmes Faces Death (1943), The Spider Woman (1944), The Pearl of Death (1944), Sherlock Holmes and the House of Fear (1945) and Terror by Night (1946).
The Asylum's Sherlock Holmes features William Huw as Lestrade, who here is known for taking the credit for many cases which Holmes solved himself. He is the former police partner of Holmes's estranged brother Thorpe, who becomes the cybernetic supervillain Spring-Heeled Jack, blaming Lestrade for a bullet wound in his spine. Lestrade here is cowardly and untrusting.