A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1
| M. Investment Limited CR s.r.o. (5) | MA Grey Consultants, Inc. (4) |
| MALINA - VRSE s.r.o. (6) | MANPOWER, spol. s r.o. (10) |
| Manpower UK Limited (9) | Martin Podzimek (4) |
| MATADOR Automotive Czech s.r.o. (4) | MATEX HK s.r.o. (7) |
| MBG, spol. s r. o. (4) | Mediaservis s.r.o. (5) |
| MESTSKA CAST PRAHA 12 (4) | Mestska nemocnice v Litomericich (5) |
| Metrostav (16) | Mgr. Petr Kmosek (5) |
| Michael Page (14) | Microsoft (57) |
| Microsoft Corporation (5) | Mita Thor International (5) |
| MK - REVIZE s. r. o. (4) | MODEL OBALY a.s. (4) |
| Monroe Czechia s.r.o. (4) | Monster (3721) |
| Monster Technologies (59) | Moravskoslezsky kraj, krajsky urad (4) |
| MOTOR JIKOV Strojirenska a.s. (4) | MROZEK a.s. (5) |