| Name | Length (m) | Year | Builder |
|---|---|---|---|
| JICJ | 29.1 | 2023 | Sanlorenzo |
| JL108 | 32.95 | 2018 | Custom Line |
| JYC | 28.43 | 2021 | Custom Line |
| JaJaRo | 30 | 2006 | Tecnomar |
| Jaaber | 35 | 2018 | Dynamiq Yachts |
| Jaan | 42 | 1997 | Intermarine S.p.A. |
| Jabu | 39 | 2013 | |
| Jack's Sin | 34.1 | 2013 | Westport Yachts |
| Jackpot | 50 | 2020 | Christensen Shipyards, LLC. |
| Jaco | 28.65 | 1996 | Monte Fino |
| Jacqpot | 31.8 | 2023 | Overmarine Group SPA |
| Jacque's Journey II | 30.76 | 2013 | Marlow Yachts |
| Jacques de Molay | 28.6 | 2006 | Benetti Sail Division |
| Jade | 30.98 | 2008 | Leopard Yachts |
| Jade 959 | 51.8 | 2014 | Jade Yachts |
| Jadranka | 34.1 | 1978 | Kraljevica Shipyard |
| Jafe Tica | 35.6 | 2012 | Dragos Yachts |
| Jag'B | 32.82 | 2020 | Custom Line |
| Jagare | 36.5 | 1981 | Abeking & Rasmussen |
| Jaguar | 56 | 2005 | Benetti SpA |
| Jamadhar | 28.59 | 2014 | Magic Yachts |
| Jamaica Bay | 59.85 | 2010 | Nobiskrug |
| Jameel | 48.88 | 1985 | CRN |
| Jana | 31.75 | 2010 | Benetti SpA |
| Janette | 33.53 | 2020 | Riva S.p.A. |
| Jangada | 32 | 2019 | Van der Valk Shipyard |
| Janice of Wyoming | 39.75 | 2005 | Alloy Yachts |
| Jannick Jai | 30.53 | 2024 | Sanlorenzo |
| Jantana | 29.26 | 2018 | Monte Carlo Yachts |
| Janus Navem | 40.08 | 2022 | Riva S.p.A. |
| Jasali II | 53 | 1998 | Perini Navi |
| Jasbid W2 | 31.05 | 2022 | Nautor Swan |
| Jasca | 35.58 | 2005 | Burger Boat Company |
| Jasi | 35.11 | 2018 | Nautor Swan |
| Jasmin | 36.84 | 2003 | RMK Marine |
| Jasmina III | 30.6 | 2022 | Ark Yacht |
| Jasmine 79 | 32 | 2022 | Azimut Yachts |
| Jasmine Luna | 28.94 | 2007 | Moonen Yachts |
| Java | 36.92 | 1990 | Broward Marine |
| Java | 28.49 | 2018 | Ferretti Yachts |
| Jax of Ibiza | 28.15 | 2009 | Sunseeker |
| Jaz | 50 | 1997 | Amels |
| Je Reviens | 34.14 | 2017 | Ocean Alexander |
| JeMaSa | 49.07 | 1973 | H.M.A. Naval Dockyard |
| Jemily II | 30.96 | 2023 | Horizon Yachts |
| Jems | 44 | 2009 | Heesen Yachts |
| Jesma II | 39.7 | 2017 | Admiral |
| Jester | 68.8 | 1972 | OY Laivateollisuus |
| Jetstream | 39.62 | 2014 | Westport Yachts |
| Jewel | 41.05 | 2015 | Gulf Craft |