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- F. Gwynplaine MacIntyre: "The Enigma of the Warwickshire Vortex" (1997) and "The Adventure of Exham Priory " in the "H.P. Lovecraft-sounding" Shadows Over Baker Street anthology (2003)
- Vonda N. McIntyre: "The Adventure of the Field Theorems" in Sherlock Holmes in Orbit
- W. R. Duncan Macmillan: "The Adventure of the Trained Cormorant" in The Further Adventures of Sherlock Holmes, 1985.
- Eddie Maguire: a short story in Sherlock Holmes and the Three Poisoned Pawns : Holmes meeting the Kaizer during a WE in Dorset
- Patrick Marcel: a short story in Les nombreuses Vies de Sherlock Holmes ( French study and anthology )
- Rafael Marín: Elemental, querido Chaplin (2005, ISBN 84-450-7542-X ) is presented as an unpublished manuscript in which Charles Chaplin tells how, as a London poor child, he helped Sherlock Holmes in an adventure against Fu Manchu.
- P. C. Martin: "Steampunk Holmes: The Legacy of the Nautilus" Published by Noble Beast
- Rodolfo Martínez: four novels in Spanish language incl. Sherlock Holmes y la Boca del Infierno and Sherlock Holmes y la Subiduría de los Muertos
- Xavier Mauméjean: with André-François Ruaud Les nombreuses vies de Sherlock Holmes alleged - and exhaustive - biography of Holmes with short stories from various authors incl. Michael Moorcock
- Nicholas Meyer: Three novels The Seven-Per-Cent Solution (1972), The West End Horror (1976) and The Canary Trainer (1993)
- Larry Millett: Sherlock Holmes and the Red Demon (1996), Sherlock Holmes and the Ice Palace (1998), Sherlock Holmes and the Rune Stone Mystery (1999), Sherlock Holmes and the Secret Alliance (2002), The Disappearance of Sherlock Holmes (2003)
- Austin Mitchelson & Nicholas Utechin: The Earthquake Machine - the very existence of the British Empire threatened by a group of criminals
- Michael Moorcock: a short story " The affair of the Texan's Honour " in The Further Adventures of Sherlock Holmes
Read more about this topic: List Of Authors Of New Sherlock Holmes Stories