| Mondelez International |
| Mondial Partner |
| Monster Beverage Corporation |
| Montana Tech Components AG |
| Montezuma's Chocolate Limited |
| Montpellier Domestic Appliances Ltd |
| Montpellier Group plc |
| Montrose International |
| 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 |