 Bernier was invited to the 2007 World Junior Ice Hockey Championships selection camp, but lost out to Montreal Canadiens' prospect Carey Price and Calgary Flames' prospect Leland Irving.Along with Steve Mason, Bernier was chosen as one of Team Canada's goaltenders for the 2008 World Junior Ice Hockey Championships, held in the Czech Republic, in which he finished with a 1–1 record and a 2.00 GAA as Canada won the gold medal over Sweden.During the 2012–13 NHL lock-out, Bernier represented Team Canada at the 2012 Spengler Cup, winning a gold medal in the final over Swiss club HC Davos.