Teams total 570
| Name | From | To | Nationality |
|---|---|---|---|
| Mercatone Uno - Albacom | 2000 | 2000 |  |
| Memory Card - Jack and Jones | 2000 | 2000 |  |
| Mecair - Ballan | 1993 | 1993 | |
| MBK - Oktos | 2003 | 2003 |  |
| Masta - Concorde | 1983 | 1983 |  |
| Massi - Kuwait Cycling Project | 2016 | 2018 |  |
| Marlux - Wincor - Nixdorf | 2003 | 2003 | |
| Marlux - Ville de Charleroi | 2002 | 2002 | |
| Mapei - QuickStep | 1999 | 2002 | |
| Mapei - GB | 1995 | 1997 | |
| Mapei - Clas | 1994 | 1994 | |
| Mapei - Bricobi | 1998 | 1998 | |
| Mapei | 1993 | 1993 | |
| Manzana - Postóbon | 2015 | 2019 |  |
| Malvor - Bottechia | 1983 | 1984 | |
| Maia - MSS | 2000 | 2000 |  |
| Madeinox - Boavista | 2008 | 2010 | |
| Lucas - Mullers | 1987 | 1987 | |
| Lubelskie Perła Polski | 2023 | 2024 |  |
| LPR Brakes | 2008 | 2009 |  |
| LPR - Piacenza | 2004 | 2005 |  |
| LPR | 2006 | 2007 | |
| Louletano - Dunas Douradas | 2013 | 2014 | |
| Lotus - Festina | 1990 | 1992 |  |
| Lotto - Soudal | 2015 | 2021 | |
