| Montrose Management Group Limited |
| Monzo Bank Limited |
| Moo Free Ltd |
| Mood Foods Ltd |
| Moomin Characters Oy Ltd |
| Morning Foods Ltd |
| Mosaik |
| Motel One Group GmbH |
| Motherease Inc |
| Mott MacDonald Group Limited |
| Moulinex |
| Mountain Warehouse International Limited |
| Mouse's Favourite Ltd |
| Mozambique English Language Teachers’ Association (MELTA) |
| Mozilla Foundation |
| MPM Products Ltd |
| Mr C G Mace |
| Mr David John James |
| MS Amlin |
| MS&AD Insurance Group, Inc. |
| MT Højgaard Holding A/S |
| MTR Corporation Limited |
| MUD Jeans International B.V. |
| Muslim Hands |
| Muurla Design Marketing Oy |