The squad is scheduled to gather on August 10 in Hanoi with 30 players chosen by the Korean coach.
Of note, goalie Pham Manh Cuong, the best goalkeeper at the national U21 tournament last year, has earned his first call-up.
The qualification round is scheduled to take place from October 23 to 31 this year.
In each group, teams play each other in a round-robin format at a concentrated venue. The 11 group winners and the best four runners-up qualify for the final tournament, slated for next June in Uzbekistan.
Vietnam were runners-up at the 2018 AFC U23 Asian Cup hosted by China./.