Ronald Edwin Naar was a Dutch mountaineer. He was born in The Hague, and was an active climber from the 1970s onwards. He made the first ascents of Peak 6393 in the Karakoram, Djo Drake in Bhutan, Tilleketinda on Greenland and Duivelsei in Suriname. He made the first Dutch ascents of several mountains, including the Eiger and K2, and was the first Dutch climber to complete the Seven Summits. He wrote several books about climbing.