| Melek | 56.01 | 2010 | Perini Navi |
| Melia | 33.53 | 1991 | Freeport Shipbuilding, Inc. |
| Melina B | 30.75 | 2007 | Azimut Yachts |
| Melinda | 29.08 | 1988 | Broward Marine |
| Melinda V | 27.99 | 2008 | Sunseeker |
| Melody | 41.54 | 2022 | Ridas Yachts |
| Melody R | 32.13 | 1991 | Pecal Shipyard |
| Melony | 39.5 | 2015 | Overmarine Group SPA |
| Melt | 33.5 | 2017 | Permare s.r.l. |
| Meltemi | 37.55 | 1931 | Samuel White |
| Memento Vivere | 39.62 | 2005 | Westport Yachts |
| Memories | 28.5 | 2024 | Riva S.p.A. |
| Memories Too | 29.1 | 2018 | Azimut Yachts |
| Memorymaker | 33.53 | 1997 | Hatteras Yachts |
| Menorca | 48.51 | 1961 | Botje Ensing & Co |
| Mephisto | 43.5 | 2002 | Vace Yacht Builders |
| Meraki | 49.7 | 2020 | Vitters Shipyard |
| Mercy | 36.88 | 2009 | Sunseeker |
| Mercy Oceans | 35.18 | 2018 | Sunseeker |
| Mereley I | 34.61 | 2024 | AES Yacht |
| Meridian A | 85.1 | 2011 | Lürssen Yachts |
| Meridiana | 28.31 | 2017 | Custom Line |
| Merit | 28.13 | 2002 | Sunseeker |
| Merk | 29.68 | 2013 | Princess Yachts |
| Merlin | 36.07 | 2010 | Mengi Yay Yachts |
| Mermaid | 33.7 | 2009 | Umut Yillikci |
| Merrymaid | 34.1 | 1904 | Camper & Nicholsons Shipyard |
| Mes Amis | 44 | 2007 | Fitzroy Yachts |
| Meserret | 40 | 1981 | Astilleros Armon |
| Meserret II | 57.2 | 1978 | Cammenga |
| Meserret III | 75 | 1992 | Peene-Werft GmbH |
| Mesmerize | 38.1 | 2012 | Hargrave Custom Yachts |
| Mesmerize | 45.96 | 1987 | Lloyds Ships |
| Mestre Belo | 29 | 2008 | Estaleiro Maccarini Ltda |
| Metaquotes | 30.45 | 2019 | Princess Yachts |
| Meteor | 28.29 | 1998 | Heesen Yachts |
| Meteor | 46.33 | 2018 | Mural Yachts |
| Meteor | 51.97 | 2007 | Royal Huisman |
| Meteor | 37.01 | 2008 | Gulf Craft |
| Metsuyan IV | 36.2 | 2006 | CBI Navi |
| Mettle | 56 | 2025 | IMS Shipyard |
| Mezcal 2 | 38 | 2012 | Yaz Gunesi |
| Mi Alma | 28.56 | 1975 | CRN |
| Mi Alma | 32 | 2001 | Sunseeker |
| Mi Alma | 27.99 | 2008 | Sunseeker |
| Mi Amor | 29.11 | 2024 | Princess Yachts |
| Mi Amor | 34.14 | 1984 | Safe Harbor Newport Shipyard |
| Mi Amore Julia | 36.6 | 2010 | Benetti SpA |
| Mi Barur | 28.07 | 1989 | Hatteras Yachts |
| Mi Cielo | 30.48 | 1997 | Azimut Yachts |
