| Name | Length (m) | Year | Builder |
|---|---|---|---|
| Kitaro | 29.1 | 2014 | Sanlorenzo |
| Kitty | 39.5 | 2008 | Timmerman Yachts |
| Kiwayu | 28.64 | 2010 | Southern Wind |
| Kiyomizu | 28.49 | 2020 | Riva S.p.A. |
| Kjos | 37.9 | 2009 | Palmer Johnson Yachts |
| Klelia 1 | 44.7 | 1957 | NV Scheepswerf Kerstholt |
| Klobuk | 30.95 | 2005 | Custom Line |
| Knickerbocker | 35.75 | 1992 | Palmer Johnson Yachts |
| Knight Time II | 34.14 | 1944 | Star Shipyard (Mercers) |
| Knot Another | 35.75 | 2024 | Sanlorenzo |
| Knotty | 30.22 | 2004 | Cantieri Navali Rizzardi |
| Kogo | 71.71 | 2006 | Alstom (Aker Yards) |
| Kohuba | 30.45 | 2016 | Princess Yachts |
| Koi | 35.05 | 2001 | McMullen & Wing Ltd |
| Koju | 36.9 | 2021 | Benetti SpA |
| Kokomo | 58.4 | 2010 | Alloy Yachts |
| Kokomo II | 37.5 | 1987 | Lloyds Ships |
| Kokomo Nights | 47.85 | 1982 | Picchiotti |
| Kokoro | 36.3 | 2020 | Moonen Yachts |
| Kolaha | 63 | 2010 | ISA Yachts |
| Kolaha Two | 35.07 | 2013 | Pershing S.p.a. |
| Kolaha Two | 35.24 | 2025 | Pershing S.p.a. |
| Kona | 33.5 | 2022 | Sky Walker Yachts |
| Konfeta | 31.68 | 2021 | Gulf Craft |
| Kormoran | 39.81 | 2006 | Kingston Shipyard |
| Koru | 50 | 1983 | Feadship |
| Koru | 127 | 2023 | Oceanco |
| Kos | 36.6 | 2009 | Benetti SpA |
| Kosatka | 82 | 2014 | Blohm & Voss GmbH |
| Koukles | 29.87 | 2008 | Azimut Yachts |
| Krebs Research | 50.84 | 1953 | John Lewis & Sons Ltd. |
| Krilo Eclipse | 57 | 2001 | FBM Babcock Marine |
| Kriss | 45 | 1974 | Abeking & Rasmussen |
| Kristo | 36.5 | 2016 | Sanlorenzo |
| Kritical Mass | 28.5 | 1995 | Broward Marine |
| Krym | 45.3 | 1978 | Almaz |
| Ku | 33.6 | 2015 | Sanlorenzo |
| Kudanil Explorer | 50 | 1978 | Teraoka Shipyard CO., LTD. |
| Kudos | 28.15 | 2014 | Sunseeker |
| Kuikila | 35.37 | 2011 | Pershing S.p.a. |
| Kuriakos | 32.5 | 1971 | Amsterdamsche Scheepwerf G. de Vries Lentsch Jr |
| Kuy Kuy | 28.27 | 2003 | Overmarine Group SPA |
| Kuyis | 30.64 | 2009 | Marmara Deniz |
| Kwikumat | 57.9 | 2003 | Abeking & Rasmussen |
| Kybele | 30.2 | 1990 | Uyav Shipyard |
| Kyknos I | 36.2 | 1984 | Chantier de L'Estérel |
| Kōkōtea | 40.3 | 2000 | Alloy Yachts |
| L'Albatros | 43.6 | 1985 | Nishii Shipyards |
| L'Ami | 27.74 | 1979 | Heesen Yachts |
| L'Ayazula | 33.5 | 2004 | Canados |