Name  | active from | active to | |
| Luscinia | | | |
| Lutka, Petr | 1970 | |  |
| Luzinska, Lucia | 1993 | | |
| M.O.R. | | | |
| M.Strapcova & L.Slamka | | | |
| M+L | | | |
| Mac Beth | 1992 | 1999 | |
| Maci | 1976 | 1993 | |
| Macku, Galla | | | |
| Mad-House Chicago I.R.A.A. | | | |
| Madalen | | | |
| Madam | 1982 | 1990 | |
| Madera | 2003 | | |
| Madfinger | 2004 | | |
| Magalova, Kamila | | | |
| Mahagon | 1972 | 1980 | |
| Mach, Miroslav | | | |
| Machalkova, Leona | 1985 | | |
| Machova, Ivana | | | |
| Maiga, Ibrahim | 1989 | | |
| Majerovy brzdove tabulky | 1985 | | |
| Majestic | 1966 | 1972 | |
| Majkluv strycek | 1987 | | |
| Makar Cudra | 1986 | | |
| Makovsky, Milos | | | |
| Makyota | 1982 | | |
| Malasek, Jiri | | | |
| Malekova, Alena | | | |
| Malignant Tumour | 1991 | | |
| Malik, Jindrich | | | |
