Feliz made his international debut for the Dominican Republic national basketball team during the 2013 Centrobasket U17 Championship for Men. In 2014, he won a bronze medal playing for the Dominican Republic national team in the 2014 FIBA Americas Under-18 Championship. In 2015, Feliz was the leading scorer in the 2015 FIBA Under-19 World Championship, averaging 18.9 points and 3.7 assists in seven games. He also played for the Dominican Republic national team during the 2015 Pan American Games.