At the
2012 Summer Olympics, he competed for the
national team in the
men's tournament. Gauthier Boccard also participated with the Belgium men's national field hockey team at the
2016 Summer Olympics in Rio. The Belgian Red Lions made an impression during these Games, winning the silver medal, and Gauthier Boccard scored one goal. He was a part of the Belgian squad which won Belgium its first
World Cup and
European title. On 25 May 2021, he was selected in the squad for the
2021 EuroHockey Championship. He was also part of the Belgian squad that won the gold medal at the delayed
2020 Olympics. ==Honours==