| Match | 29.06 | 2024 | Sanlorenzo |
| Mathilda I | 28.5 | 1994 | Hakvoort Maritiem |
| Matina | 38 | 2000 | Perama Shipyard |
| Matrix | 41.15 | 1999 | Baglietto S.p.A. |
| Matsu | 36.5 | 2007 | ISA Yachts |
| Matzu | 30.78 | 2014 | Sunseeker |
| Maverick | 28.95 | 2003 | Kuipers Woudsend |
| Maverick | 39.83 | 2013 | Admiral |
| Maverick | 50.2 | 2022 | Overmarine Group SPA |
| Maverick | 40.8 | 2023 | Benetti SpA |
| Maverick | 28.42 | 2018 | Viking Yachts |
| Maverick | 42.06 | 1988 | Nishii Shipyards |
| Maxicat Victoria | 33.5 | 2000 | Chantier Multiplast |
| Maxim's des Mers | 57.5 | 1942 | Marietta Manufacturing |
| Maxima Star | 38.12 | 2008 | Ursa Tersanesi |
| Maximilian MMIV | 44.85 | 2009 | Sunrise Yachts |
| Maximus | 59 | 2023 | Vitters Shipyard |
| Maximus | 29.9 | 2021 | Riva S.p.A. |
| Maxita | 39.15 | 2024 | Kolotura j.d.o.o. |
| Maxxx 2 | 28 | 2008 | Sunseeker |
| Maya | 29.41 | 2009 | Princess Yachts |
| Maya's Dugong | 43 | 1966 | Port Weller Dry Docks |
| Mayan Queen IV | 93.25 | 2008 | Blohm & Voss GmbH |
| Maybe | 59 | 2016 | Metalships & Docks S.A. |
| Mazag | 30.7 | 1997 | Falcon Yachts S.r.l. |
| Mazal | 28.04 | 1977 | Benetti SpA |
| Mazurka | 38.7 | 1956 | Stocznia Polnocna Sa |
| Mazy | 38.6 | 2003 | Alloy Yachts |
| Mbolo | 29.1 | 2004 | Jongert Yachts |
| Mea Culpa | 39.62 | 2003 | McMullen & Wing Ltd |
| Meantime | 28.04 | 2003 | Horizon Yachts |
| Mechta | 34 | 1998 | SES Yachts |
| Mechtilda | 32 | 2022 | Horizon Yachts |
| Med-Dooz | 33 | 2022 | Custom Line |
| Medea | 40.84 | 1904 | Alexander Stephens & Son |
| Medially | 46.3 | 2015 | Baglietto S.p.A. |
| Meditation | 37 | 1999 | Charin Pongampai |
| Medora | 33 | 2010 | Sanlorenzo |
| Medusa | 30.48 | 2006 | Southern Wind |
| Medusa | 30.48 | 2002 | Azimut Yachts |
| Meduse | 33 | 2012 | Sanlorenzo |
| Mega Adventurer | 36 | 2000 | Austal |
| Megalodon | 28.15 | 2015 | Sunseeker |
| Megan | 44.65 | 2011 | Feadship |
| Megi One | 34.8 | 2000 | Couach Yachts |
| Megumi III | 28.06 | 2017 | Sunseeker |
| Mehetabel III | 28.19 | 1963 | Burger Boat Company |
| Mehzam | 42.98 | 1996 | Huffstutler |
| Meira | 55 | 2018 | Neta Marine |
| Melanya | 35.98 | 2007 | Gulf Craft |
