The 16 teams were divided into four groups for the June 15-July 2 tournament, which will see the top four sides seal their places in the FIFA U-17 World Cup Peru 2023 in November.
Host Thailand, champion in 1998, will have Malaysia, Laos and Yemen for company.
Two-time champion Korea Republic was drawn with Iran, Afghanistan and Qatar in an exciting Group B, with Iran and Qatar having won the title once each previously.
Tajikistan, the 2018 runner-up, will face a challenging Group C with Australia, Saudi Arabia and China - both two-time winners.
Japan, the 2018 champion and three-time winner, will face India, Vietnam and Uzbekistan in Group D.