Park Ji-sung
In May 2015, Lee was the youngest member of South Korea under-18 team that participated in the , hosted by Park Ji-sung. In September 2015, he also played in an under-17 competition, , and scored two goals against Croatia. In March 2017, Lee participated in the to prepare the 2017 FIFA U-20 World Cup. He scored two goals against Zambia in the second game of the tournament, including a chip shot.