Herbert Greenhough Smith (1855 – 14 January 1935) was the first editor of The Strand Magazine which published many of Arthur Conan Doyle's Sherlock Holmes stories.

Born in Stroud in 1855, the eldest of the eight children of Alfred Smith (1821–1896) and his wife Eleanor née Greenhough (1821–1896), Herbert was given his mother's maiden name as a middle name and subsequently used it as a double surname.

He loved playing spelka (a forerunner of Lexicon, the word-making card game) and he was often to be found ensconced at a table at his club overlooking the Thames with Eille Norewood, the actor, R.D.

He brought the idea of a new publication, filled with a mix of stories and articles complete in itself, to the attention of publisher George Newnes.

He has also been portrayed on television, by Ralph Riach in Murder Rooms, and by Allan Corduner in The Strange Case of Sherlock Holmes and Arthur Conan Doyle (2005).