Mattias Beck (born 21 January 1983 in Täby) is a Swedish professional ice hockey player (left wing), currently playing with SC Riessersee in the DEL2. Beck played youth hockey with Viggbyholms IK before he played 11 games in AIK of the Elitserien (SEL) in the 2010–11 season. He later played four seasons with Mora IK of the HockeyAllsvenskan (Allsv). On July 7, 2015, Beck left Sweden for the first time in his professional career, agreeing to a one-year deal with German club SC Riessersee of the DEL2.