Jouni Loponen (b. July 1st 1971 in Oulu, Finland) is a retired professional defenceman. After playing eight games with the Spokane Chiefs of the WHL in 1988-89, Loponen returned to his home country to play for the junior and B squad of Kärpät Oulu. In 1994-95, Loponen made his pro debuts with JYP Jyväskylä of the SM-Liiga. Following this stellar season, Loponen returned to HV 71 where he spent 4 seasons. He joined Kärpät Oulu in 2005 and the Herning Blue Foxes in 2007-08. He retired after the season.