| Atlas | 28.96 | 2012 | Northern Marine Co. LLC |
| Atlas | 31.1 | 2017 | Cantiere delle Marche (CdM) |
| Atlas | 74 | 2007 | Lürssen Yachts |
| Atlas I | 37 | 1960 | Reposaaren Konepaja |
| Atmosphere | 53 | 2000 | Perini Navi |
| Atmosphere | 29.87 | 2008 | Azimut Yachts |
| Atmosphere | 45.5 | 2006 | Asenav |
| Atom | 33.83 | 2007 | INACE Yachts |
| Atom | 36.6 | 2020 | C.P.N. S.r.l. |
| Atomic | 63.7 | 2020 | VSY |
| Aton | 32.92 | 1995 | Broward Marine |
| Atrevida | 32 | 1923 | Herreshoff |
| Attessa | 68.58 | 2001 | Feadship |
| Attessa IV | 101.2 | 1999 | Evergreen Shipyard |
| Attila | 64 | 2019 | Sanlorenzo |
| Attimo | 31.45 | 2003 | CMN Yacht Division |
| Attitude | 40.6 | 2022 | Baglietto S.p.A. |
| Audace | 46.6 | 2019 | Cantiere delle Marche (CdM) |
| Audaces | 44.81 | 2014 | Sunrise Yachts |
| Audacity | 30.54 | 1990 | Broward Marine |
| Audrey A | 34.14 | 1941 | LeBlanc Shipyard |
| Audrey B | 33.4 | 1928 | James S Gardner |
| Audrey II | 31.7 | 1997 | Jongert Yachts |
| Audrey The First | 36.5 | 2021 | Nautor Swan |
| Augusta Wally | 30.5 | 2009 | Wally |
| Aumichakiad | 36.88 | 1997 | Royal Hakvoort Shipyard |
| Aura | 40.25 | 2005 | Alloy Yachts |
| Aura | 36.6 | 2006 | Benetti SpA |
| Aura | 30.53 | 2019 | Ocean Alexander |
| Aura | 31.6 | 1994 | CNB - Construction Navale Bordeaux |
| Aurelia | 39.37 | 2020 | Cantiere delle Marche (CdM) |
| Aurelia | 37.19 | 2011 | Heesen Yachts |
| Aurelius | 33.9 | 2011 | Jacht Ontwikkelings Maatschappij Holland BV |
| Auriane | 30.21 | 1986 | Broward Marine |
| Aurora | 30.75 | 1947 | Newbert & Wallace |
| Aurora | 35.97 | 1950 | Cantieri de la Monica |
| Aurora | 30 | 2011 | Tecnomar |
| Aurora | 48.85 | 1961 | Lürssen Yachts |
| Aurora | 50 | 1992 | Feadship |
| Aurora | 49 | 2017 | Rossinavi |
| Aurora A | 49.32 | 1993 | Admiral Marine Works |
| Aurora X | 74 | 2017 | Lürssen Yachts |
| Aurum | 33 | 2006 | |
| Aurum Sky | 52 | 2020 | Odisej Shipyard |
| Auspro | 27.6 | 1988 | Azimut Yachts |
| Aussie Rules | 28.42 | 2017 | Viking Yachts |
| Australia | 56 | 2012 | Benetti SpA |
| Australis | 27.89 | 2006 | Hargrave Custom Yachts |
| Ava | 40 | 1976 | CRN |
| Ava | 35.46 | 2005 | Azimut Yachts |
