Companies
- MAGES
- Magination Games
- Mail.ru
- Major League Gaming
- Mamba Games
- MAPPA
- Marvel
- Marvel Animation
- Marvel Games
- Marvel Studios
- Marvelous
- Marvelous AQL
- Marvelous Entertainment Inc.
- Marvelous Europe
- Marvelous Interactive
- Marvelous USA
- Marvelous, Inc.
- Mass Creation
- Mass Media Interactive Entertainment
- Massive Entertainment
- Massive Monster
- Mastertronic Group
- Masthead Studios
- Matrix Games
- Matt Thorson
- Matt White
- Mattel
- Matthias Linda
- Maverick Games
- Max
- Maximum Entertainment
- Maximum Games
- Maxis
- McDonald's
- McFarlane Toys
- MDHR
- Media Create
- Media Molecule
- Media Vision
- Mediatonic
- MegaCrit
- Melbourne House
- Mercury Steam Entertainment
- Merge Games
- Meridian4
- Messhof
- Meta
- Metanet Software
- Meteor Entertainment
- Mforma