Sébastien Dockier (born 28 December 1989) is a Belgian field hockey player who plays for Dutch club Pinoké and the Belgium national team as a forward.
Dockier comes from a real hockey family; not only his father and sister but even aunts and cousins have been playing field hockey.
During his youth, he played for Royal Beerschot THC, where he played in the first team until 2014, when he left to play for Dutch club HC Den Bosch. After three seasons with Den Bosch, he went back to his former club. He played there for one season before returning to the Netherlands to play for Den Bosch again. In June 2020 he left Den Bosch and joined Pinoké for the 2020–21 season.
He became European vice-champion with Belgium at the 2013 EuroHockey Championships on home ground in Boom and at the 2017 EuroHockey Championships in Amstelveen, Netherlands. He was a part of the Belgian squad which won the silver medal at the 2016 Summer Olympics. He was selected for the 2018 World Cup, which will be his second World Cup.