Bjørn Helge Semundseth Riise (born 21 June 1983 in Ålesund) is a Norwegian professional footballer. He currently plays for Lillestrøm SK. Riise plays either a central midfielder or a right winger, and has earned 35 international caps for Norway. He played for Fulham of the Premier League from July 2009 to August 2012. He is the younger brother of former Fulham player John Arne Riise, also a Norwegian international.