Korzits put in another consistent display of sailing in Cadiz, Spain and finished in the top three in eight of ten races sailed. Like the 2011 ISAF Worlds she finished ahead of Zofia Klepacka (POL) who had to settle for silver.
Klepacka only finished out of the top three once in ten races, but Korzits won four races compared to the two picked up by the Polish sailor.
Alessandra Sensini (ITA) came through in third. The Italian had a shaky start but powered through to win the final four races of the regatta.
Bontemps will be happy with his first RS:X World title after he finished two points ahead of Nick Dempsey (GBR) and a seven ahead of JP Tobin (NZL).
London 2012 Olympic Qualification places were also up for grabs in Cadiz.
In the Men's fleet Belarus, Czech Republic, Columbia, Thailand, Bulgaria, Venezuela, Estonia, Denmark and Chinese Taipei took the remaining RS:X nations places up for grabs for London 2012.
And in the Women's fleet, the Netherlands, USA, Argentina, Russia, Estonia, Thailand and Portugal took the final seven places available in the women's fleet.
1. Julien Bontemps (FRA) 24pts
2. Nick Dempsey (GBR) 26pts
3. JP Tobin (NZL) 31pts
4. Dorian van Rijsselberge (NED) 31.6pts
5. Byron Kokkalanis (GRE) 32pts
1. Lee Korzits (ISR) 17pts
2. Zofia Klepacka (POL) 21pts
3. Alessandra Sensini (ITA) 27pts
4. Bryony Shaw (GBR) 48pts
5. Maja Dziarnowska (POL) 55pts