The 2018 AFF U-19 Youth Championship was an international football tournament that was held in Indonesia from 1 July to 14 July. The 11 national teams involved in the tournament were required to register a squad of 23 players; only players in these squads are eligible to take part in the tournament.
====== Head Coach: Indra Sjafri
====== Head Coach: Issara Sritaro
====== Head Coach: Hoàng Anh Tuấn
====== Head Coach: Rob Servais
====== Head Coach: Reiji Hirata
====== Head Coach: Chusak Sriphum
====== Head Coach: Bojan Hodak
====== Head Coach: Myo Hlaing Win
====== Head Coach: Kim Shinh-Wan
====== Head Coach: Musashi Mizushima
====== Head Coach: Takao Fujiwara