| Name | Length (m) | Year | Builder |
|---|---|---|---|
| M Forever | 33 | 2021 | Custom Line |
| M&A's | 32.7 | 2013 | Canados |
| M&Em | 74 | 2022 | Amels |
| M&M | 32 | 1994 | Crescent Custom Yachts |
| M-Irafish | 34 | 2003 | Bilgin Yachts |
| M. Faith | 36 | 1971 | Camper & Nicholsons Shipyard |
| M.A.S. | 28.78 | 2002 | Sunseeker |
| M.A.S.K. | 42.61 | 2023 | Custom Line |
| M.Byond | 36.5 | 2024 | Benetti SpA |
| M.J. Taknm | 40.55 | 2005 | ISA Yachts |
| M2 | 130.2 | 2002 | Severnav Shipyard |
| M3 | 44.2 | 2002 | Intermarine Savannah |
| M4 | 33 | 2002 | RMK Marine |
| M5 | 77.6 | 2004 | Vosper Thornycroft |
| M5 | 34.53 | 2013 | Sunseeker |
| M55 | 41.18 | 2020 | Yildiz Shipyard |
| M7 | 29.22 | 2023 | Canados |
| M882 Houtepen | 33.1 | 1961 | Arnhemsche Scheepsbouw Maatschappij |
| MCY 105/03 | 32.26 | 2016 | Monte Carlo Yachts |
| MCY 105/07 | 32.26 | 2017 | Monte Carlo Yachts |
| MCY 105/09 | 32.26 | 2017 | Monte Carlo Yachts |
| MCY 105/11 | 32.26 | 2017 | Monte Carlo Yachts |
| MCY 105/14 | 32.26 | 2018 | Monte Carlo Yachts |
| MLR | 53.3 | 2019 | Delta Marine |
| MMM | 49 | 1993 | Amels |
| MP5 | 45.2 | 1989 | Feadship |
| MTL | 34.14 | 2016 | Ocean Alexander |
| MV… | 33.04 | 2024 | Sanlorenzo |
| MYC | 42.67 | 2001 | Westship Yachts |
| Ma | 45.3 | 2019 | Overmarine Group SPA |
| Ma Victoire | 36.5 | 2016 | Ocean King |
| MaRo | 39.5 | 1988 | Picchiotti |
| Maaos | 38.4 | 2010 | Sunseeker |
| Mabrouk | 38.3 | 2004 | Cantieri di Pisa |
| Mac | 31 | 2007 | Italcraft |
| Mac One | 33 | 2019 | Custom Line |
| MacGuffin | 29.44 | 2015 | Nordhavn Yachts |
| Maca | 28.3 | 2008 | Benetti Sail Division |
| Macqndo | 30.6 | 2013 | Custom Line |
| Macy Belle | 33.59 | 2003 | New Versilcraft srl |
| Madam | 33.5 | 1978 | Camcraft |
| Madame Gu | 99 | 2013 | Feadship |
| Madame Kate | 62.4 | 2015 | Amels |
| Madame Thelma | 39.8 | 1975 | CRN |
| Madiblue D | 46.69 | 1986 | Oceanfast |
| Madiz | 55.4 | 1902 | Ailsa Shipyard |
| Mado | 39.25 | 2008 | Admiral |
| Mado | 49.8 | 2014 | Heesen Yachts |
| Maestro | 34 | 2007 | Custom Line |
| Maestro | 29.41 | 2009 | Princess Yachts |