Windsurfing was late comer to the Summer Olympics. While sailing was introduced in 1900, windsurfing was first introduced into the Olympics in 1984 for men and 1992 for women.
Historically, the most successful countries for windsurfing in the Olympics have varied over the years. New Zealand has won the most Olympic medals in windsurfing across men’s and women’s event.
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Windsurfing was famously cut as an Olympic event back in 2012 and replaced with kitesurfing. However, it was reinstated again six months later by the International Sailing Federation (ISAF) after pressure from windsurf federations.
You read more about the history of windsurfing here.