Stefan Hirniak Stefan Max Hirniak (born February 5, 1985) is a swimmer from Canada, who mostly competes in the freestyle and butterfly events.

He claimed a bronze medal (4 × 200 m freestyle relay) at the 2007 Pan American Games in Rio de Janeiro, Brazil.

At the 2010 Commonwealth Games in Delhi Hirniak won bronze in the 200 m butterfly during the first day of competition.

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