| Name | Length (m) | Year | Builder |
|---|---|---|---|
| Medusa | 30.48 | 2002 | Azimut Yachts |
| Medusa | 30.48 | 2006 | Southern Wind |
| Medora | 33 | 2010 | Sanlorenzo |
| Meditation | 37 | 1999 | Charin Pongampai |
| Medially | 46.3 | 2015 | Baglietto S.p.A. |
| Medea | 40.84 | 1904 | Alexander Stephens & Son |
| Med-Dooz | 33 | 2022 | Custom Line |
| Mechtilda | 32 | 2022 | Horizon Yachts |
| Mechta | 34 | 1998 | SES Yachts |
| Meantime | 28.04 | 2003 | Horizon Yachts |
| Mea Culpa | 39.62 | 2003 | McMullen & Wing Ltd |
| Mbolo | 29.1 | 2004 | Jongert Yachts |
| Mazy | 38.6 | 2003 | Alloy Yachts |
| Mazurka | 38.7 | 1956 | Stocznia Polnocna Sa |
| Mazal | 28.04 | 1977 | Benetti SpA |
| Mazag | 30.7 | 1997 | Falcon Yachts S.r.l. |
| Maybe | 59 | 2016 | Metalships & Docks S.A. |
| Mayan Queen IV | 93.25 | 2008 | Blohm & Voss GmbH |
| Maya's Dugong | 43 | 1966 | Port Weller Dry Docks |
| Maya | 29.41 | 2009 | Princess Yachts |
| Maxxx 2 | 28 | 2008 | Sunseeker |
| Maxita | 39.15 | 2024 | Kolotura j.d.o.o. |
| Maximus | 29.9 | 2021 | Riva S.p.A. |
| Maximus | 59 | 2023 | Vitters Shipyard |
| Maximilian MMIV | 44.85 | 2009 | Sunrise Yachts |
| Maxima Star | 38.12 | 2008 | Ursa Tersanesi |
| Maxim's des Mers | 57.5 | 1942 | Marietta Manufacturing |
| Maxicat Victoria | 33.5 | 2000 | Chantier Multiplast |
| Maverick | 42.06 | 1988 | Nishii Shipyards |
| Maverick | 50.2 | 2022 | Overmarine Group SPA |
| Maverick | 28.42 | 2018 | Viking Yachts |
| Maverick | 39.83 | 2013 | Admiral |
| Maverick | 28.95 | 2003 | Kuipers Woudsend |
| Maverick | 40.8 | 2023 | Benetti SpA |
| Matzu | 30.78 | 2014 | Sunseeker |
| Matsu | 36.5 | 2007 | ISA Yachts |
| Matrix | 41.15 | 1999 | Baglietto S.p.A. |
| Matina | 38 | 2000 | Perama Shipyard |
| Mathilda I | 28.5 | 1994 | Hakvoort Maritiem |
| Match | 29.06 | 2024 | Sanlorenzo |
| Mata Mua | 38.5 | 1991 | Scheepswerf Friesland |
| Mat | 44.5 | 2024 | Cantiere delle Marche (CdM) |
| Mastiff | 32 | 1967 | Appledore Shipbuilders Ltd |
| Masteka 2 | 37.19 | 2009 | Monte Fino |
| Masquenada | 51 | 2007 | Penglai |
| Mashua Bluu | 29.4 | 2011 | Yachts Industries |
| Mashallah | 40.23 | 1979 | Toughs Shipyard |
| Masha | 32.5 | 2020 | Numarine |
| Mascot | 45.14 | 1958 | 3.MAJ d.d |
| Mascalzone Assai | 33.88 | 1930 | William Beardmore |