Thirteen of the sixteen teams (including hosts Thailand) that qualified for 2018 AFC U-23 Championship qualified again for the 2020 final tournament. The 2013 champions Iraq, 2016 champions Japan, 2018 champions Uzbekistan all qualified for the 2020 final tournament. The teams: Iraq, Japan, Uzbekistan, Jordan, Syria, Saudi Arabia, North Korea, South Korea, China PR, Australia qualified for all editions of AFC U-23 Championship till 2020.
