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|FIS Snowboarding World Championships|
|2011 La Molina||Big air|
Petja Piiroinen (born August 15, 1991) is a snowboarder from Finland. He won the gold medal at the 2011 FIS Snowboarding World Championships in the big air event. He is the younger brother of fellow snowboarder Peetu Piiroinen.
- "PIIROINEN Petja – Results". International Ski Federation (FIS). Retrieved 2016-05-17.
- Rask, Anne (2 April 2011). "Snowboarder Petja Piiroinen's future dreams include Olympic victory and a career as a painter-decorator". Helsingin Sanomat. Archived from the original on 2011-04-10. Retrieved 31 March 2014.
- FIS-Ski.com - Biography