Nathan Walker is an Australian professional ice hockey player who is a forward for the St. Louis Blues of the National Hockey League (NHL). Walker, who was born in Wales, grew up in Australia and first played ice hockey there. He moved to the Czech Republic in 2007 in order to further his career, and joined the junior program of HC Vítkovice, a member of the Czech Extraliga. He first played for the senior team in 2011, becoming the first Australian ice hockey player to play for a professional senior team in Europe. Along with HC Vítkovice, Walker was loaned to several lower-level Czech teams.