Oscar Lengdén (born 12 May 1992) is a Swedish professional golfer. Lengdén spent four years and won two NCAA Division titles at Nova Southeastern University in Fort Lauderdale before he returned to Europe and turned professional in 2015. Competing in his native Sweden he won four times in six weeks to earn his place on the Nordic Golf League, where he won twice. He finished third on the 2016 Nordic Golf League ranking to become a Challenge Tour rookie in 2017.