M
- Daniel C. Macdonald ~ Omega Chess
- William Maclean ~ Hard Line
- Karl Friedrich Maier ~ Quadrata
- Rich Maiers ~ Scoozie
- Wolfram Mandel ~ Fridericus Rex (with Jean Du Poel)
- Harold C. Manley ~ Moxie
- Ronnie Manor ~ Sexta (with Gilit Metuki)
- Mirko Marchesi ~ Ball and Chain, Blast, Quoridor
- Michael Marcus ~ Kechi
- George Marino ~ Timeline
- Scott Marley ~ Archimedes (with Philip Cohen)
- Torsten Marold ~ Kippit
- Jean-Louis Marti ~ Kontact
- Teruo Matsomuto ~ Shogun
- Dieter Matthes ~ Irrgendwie (with Sylvia Heinz)
- Patrick Matthews ~ Ice Lake
- J. B. McCarthy ~ The power Game
- Mark McGregor ~ Stonewall (with Grant and Roger Bullot)
- Sean McGuire ~ Obonto (with Thomas McGuire)
- Thomas McGuire ~ Obonto (with Sean McGuire)
- Mike McManaway ~ Tantrix
- Tom McNamara ~ Connections
- Dan R. McWilliams ~ Megachess
- Dwayne Mears ~ Color Maze
- Heinz Meister ~ Balance, Mimikry
- Daniel Melegi ~ Arena
- Jose Mellina ~ K'Dor
- Michal Mesyjasz ~ Revhex
- Gilit Metuki ~ Sexta (with Ronnie Manor)
- Steven Meyers ~ Anchor, Orbit, Trellis
- Joe Miccio ~ Quick Chess
- R. Michaelson ~ Quivive (with F. Fatherie)
- Thiago Migoto ~ Louis XVI
- John W. Mollett ~ Annexation
- George H. Monks ~ Halma
- Franck Monnoury ~ Bermude
- Alan Moon ~ Lumberjack (with Aaron Weissblum)
- Autumn Moore ~ Abagio (with Michael Moore)
- Bob Moore ~ Cathedral
- Michael Moore ~ Abagio (with Autumn Moore)
- Richard Morgan ~ La-Trel
- Kyra Moritz ~ Denkste
- M. K. Morrison ~ Big Battle
- Hila Moscovich ~ Transfer (with Ivan Moscovich)
- Ivan Moscovich ~ Transfer (with Hila Moscovich)
- Blaise Muller ~ Quarto
