The North Sea Cup was an open chess tournament played in Esbjerg, Denmark from 1976 to 2008. Until 2003 there was an amateur section (a Swiss system tournament) and a 10-player round-robin tournament for titled players. The exceptions are 1986 and 1987. In 1986 the titled section was the play-off for the Danish Chess Championship. In 1987 the titled section was replaced by the Danish Juniors' Championship. From 2004 the tournament has only one division, a nine- or ten-round Swiss system.
The North Sea Cup was not played in 2009.
| # | Year | Winner |
|---|---|---|
| 1 | 1976 | Ulrik Rath Uwe Kunsztowicz |
| 2 | 1977 | Jens Kristiansen |
| 3 | 1978 | Bent Larsen |
| 4 | 1979 | László Vadász Jonathan Mestel |
| 5 | 1980 | Artur Yusupov |
| 6 | 1981 | Lars Karlsson |
| 7 | 1982 | Ľubomír Ftáčnik |
| 8 | 1983 | Curt Hansen |
| 9 | 1984 | Nigel Short |
| 10 | 1985 | Andras Adorjan |
| 11 | 1986 | Carsten Hoi (match winner) |
| 12 | 1987 | Lars Bo Hansen (Danish Junior's Ch) |
| 13 | 1988 | Rafael Vaganian Viktor Kupreichik |
| 14 | 1996 | John Emms |
| 15 | 2000 | Peter Svidler Mikhail Gurevich |
| 16 | 2001 | Peter Heine Nielsen Emil Sutovsky |
| 17 | 2002 | Lazaro Bruzon Leinier Domínguez |
| 18 | 2003 | Alexey Dreev Luke McShane Krishnan Sasikiran |
| 19 | 2004 | Nikola Sedlak |
| 20 | 2005 | Vladimir Belov |
| 21 | 2006 | Stefan Đurić Aloyzas Kveinys Igor Rausis Gerhard Schebler |
| 22 | 2007 | Karsten Rasmussen |
| 23 | 2008 | Vadim Malakhatko |