Books about Man-woman relationships -- Fiction (sorted alphabetically)
- Miss Numè of Japan: A Japanese-American Romance Onoto Watanna
- Miss Tweedham's Elogarsn Robert Moore Williams
- Modern Flirtations: A Novel Catherine Sinclair
- Modern Mephistopheles, and A Whisper in the Dark Louisa May Alcott
- Mollie's Substitute Husband Max McConn
- Molly Make-Believe Eleanor Hallowell Abbott
- Molly Make-Believe Eleanor Hallowell Abbott
- Monsieur de la Petite Dame" Frances Hodgson Burnett
- Monsieur Vénus (French) Rachilde
- Monster Edgar Saltus
- Moonlight and Robots Jerry Dunham
- Mr. Incoul's Misadventure Edgar Saltus
- Mrs. Essington: The Romance of a House-party Esther Chamberlain and Lucia Chamberlain
- Mrs. Farrell William Dean Howells
- Mrs. General Talboys Anthony Trollope
- Mrs. Harter E. M. Delafield
- Mrs. Korner Sins Her Mercies Jerome K. Jerome
- Mrs. Maxon Protests Anthony Hope
- Mr. Wu Louise Jordan Miln, Harry M. Vernon, and Harold Owen
- Mummery: A Tale of Three Idealists Gilbert Cannan
- Mutta -- naivat tummaverisiä" (Finnish) Anita Loos
- My lady of Cleeve Percy John Hartley
- Mystery of the Locks E. W. Howe
- Mystics: A Novel Katherine Cecil Thurston
- Naisen mahti (Finnish) Frank Norris