Dianne Margaret de Leeuw (born 19 November 1955) is a Dutch-American former competitive figure skater who represented the Netherlands.

To gain a berth to the 1972 Winter Olympics, de Leeuw was required to finish in the top ten at the 1972 European Championships.

At the 1974 World Championships in Munich, she was awarded the bronze medal and stepped onto the podium with Errath and Dorothy Hamill.

In 1975, de Leeuw repeated as silver medalist at the European Championships in Copenhagen, while Errath again won gold.

At the 1976 Winter Olympics in Innsbruck, she carried the Dutch flag and made daily trips to Germany for ice time.