Markku Koski (born 15 October 1981) is a Finnish professional snowboarder from Sievi.

He is well known within the snowboarding community for his consistent showing in half-pipe competitions and for his video parts with Standard Films.

Koski won the bronze medal at 2006 Winter Olympics in the Halfpipe competition, and he won a gold medal in the Big Air competition at the 2009 Snowboard World Championships.

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