Douglas "Doug" Mason (born August 20, 1955) is a Canadian-Dutch professional ice hockey coach. He has been serving as head coach of the Graz 99ers in Austria since December 2016. His son Steve Mason is a professional ice hockey player.
Born in Sudbury, Ontario, Mason played in the SOJHL, OHA and IHL. Mason made his way to the Netherlands in 1979, signing with the Tilburg Trappers. He played for the team for the rest of his career, which ended in 1988.
Mason’s coaching career began in 1989: In his first head coach role, he worked for Dutch team Langhout Utrecht for two years, guiding the club to winning the 1991 Eredivisie championship, and then would spend the 1991-92 season in the OHL, serving as assistant coach of the Sudbury Wolves.
After shorts stints in Switzerland (SC Lyss) and Italy (Asiago Hockey), Mason returned to the Tilburg Trappers in 1993 and spent four years at the helm of the club. Under his tutelage, the Trappers captured three straight Eredivisie championships.
Following a second stop in Switzerland at SC Luzern in 1997-98, saving the NLB side from relegation, he was named head coach of German top-tier club Augsburger Panther. The following season, 1998–99, he was hired by fellow Deutsche Eishockey Liga (DEL) side Krefeld Pinguine and worked as Krefeld head coach until 2001.