World championships have been held since 1981 with Australians continuing to dominate by winning 21 of these 30 championships.
To date A Cats are sailed in 19 countries throughout the World, covering Great Britain, France, Netherlands, Denmark, Austria, Sweden, Switzerland, Belgium, Germany, Italy, Spain, USA, Canada, New Zealand, Australia, Poland, Argentina, Ireland, San Marino.
| Year | Location | Winner | Country |
| 2022 | Houston (USA) | R. Parent (Open) A. Landenberger (Classic) |
USA Australia |
| 2021 | (no event) | ||
| 2020 | (no event) | ||
| 2019 | Weymouth (UK) | M. Heemskerk (Open) A. Landenberger (Classic) |
Holland Australia |
| 2018 | Hervey Bay (AUS) | G. Ashby (Open) A. Landenberger (Classic) |
Australia Australia |
| 2017 | Sopot (Poland) | S. Brewin | Australia |
| 2016 | Medemblik (The Netherlands) | M. Heemskerk | Holland |
| 2015 | Punta Ala (Italy) | G. Ashby | Australia |
| 2014 | Takapuna (NZ) | G. Ashby | Australia |
| 2012 | Islamorada (US) | M/ Heemskerk | Holland |
| 2011 | Aarhus (Denmark) | S.Brewin | Australia |
| 2010 | Cesenatico (Italy) | G. Ashby | Australia |
| 2009 | Lake MacQuarie (Aust) | G. Ashby | Australia |
| 2008 | (No Worlds held) | ||
| 2007 | Islamorada (US) | G. Ashby | Australia |
| 2006 | Vastervik (Sweden) | G. Ashby | Australia |
| 2005 | Sanguinet (France) | P. Melvin | U.S.A. |
| 2004 | New Plymouth (NZ) | G. Ashby | Australia |
| 2002 | Martha’s Vineyard (USA) | G. Ashby | Australia |
| 2001 | Port Genesta (Spain) | S. Brewin | Australia |
| 2000 | Cesenatico (Italy) | N. Bunkenburg | Germany |
| 1999 | McCrae (Aust.) | N. Bunkenburg | Germany |
| 1997 | Long Beach (USA.) | P. Melvin | U.S.A. |
| 1996 | L’Estartit (Spain) | G. Ashby | Australia |
| 1995 | Andijk (Holland) | E. Babbi | bbi Italy |
| 1994 | Lake Cootharaba (Aust) | M. Booth | Australia |
| 1993 | Sanguinet (France) | E. Babbi | Italy |
| 1992 | Silvaplana (Switz.) | P. McKenzie | Australia |
| 1991 | Gromitz (Germany) | P. McKenzie | Australia |
| 1990 | Napier (N.Z.) | G. Goodall | Australia |
| 1988 | Turkey Point(Can.) | G. Goodall | Australia |
| 1987 | Blairgowrie (Aust.) | B. Schafferius | Australia |
| 1986 | Brenzone (Italy) | S. Anderson | Australia |
| 1985 | Spray Beach (USA.) | A. Goodall | Australia |
| 1984 | Wellington (N.Z.) | A. Goodall | Australia |
| 1982 | Cesanatico (Italy) | A. Babbi | Italy |
| 1981 | Botany Bay (Aust.) | B. Anderson | Australia |