In May 2014, Kuzmić publicly stated his desire to play for the Serbian national team. In June 2014, national team head coach Aleksandar Đorđević included him on the preliminary 29-player list for the twelve 2014 World Cup roster spots. Three weeks later, in early July 2014, Kuzmić further made Đorđević's shortened list of 20 players invited for the training camp, however, a fibula injury he picked up during the 2014 NBA Summer League ruled him out.