The 6 Metre World Championships are biennial international sailing regattas in the 6 Metre class organized by the International Six Metre Association.
The principal trophy is the Six Metre World Cup. Swedish sailor Pelle Petterson has won most titles, with three titles between 1977 and 1983. Swiss sailor Bernard Haissly and Swedish Carl-Gustaf Piehl, have two each.
The most championships has been won by Swedish sailors, on eight occasions, followed by Swiss sailors, three titles, and sailors of Canada and the United States (two each).
The International 6 Metre was an Olympic class from 1908 to 1952.
The first 6 Metre World Cup were held in Seattle in 1973.
World Champions in 6 Metre
- 1973: Blackaller
- 1975: Fredell
- 1977: Petterson
- 1979: Petterson
- 1981: no champion decided
- 1983: Petterson
- 1985: Dürr
- 1987: Owen
- 1989: Kostecki
- 1991: Carlsson
- 1993: Favini & Bassani
- 1995: Piehl
- 1997: Owen, Howe, Lipsett, Smallridge & Barron
- 1999: Haissly, Berthoud, Megavand, Pachoud & Bechard
- 2003: Piehl
- 2005: Grünau, Batzil & Eich
- 2007: Haissly
- 2009: Stenbeck
- 2011: Marilley
- 2013: MacDonald, Costa, Kinsey, Vogel & Griffin
- 2015: Marilley, Berthoud, Schadegg, Dürr & Nicole