Nils Karl Johannes "Nisse" Ekman (born 11 March 1976) is a Swedish former professional ice hockey right winger. During his 15-year career as a player at the professional level he played in the National Hockey League, Swedish Elite League (SEL), Kontinental Hockey League (KHL), and SM-liiga. He played for the SEL team Djurgårdens IF when he suffered a stroke in December 2010, forcing him to retire from hockey on 10 August 2011.