The 2018 AFF U-16 Championship was the thirteenth edition of the AFF U-16 Championship, the annual international youth association football championship organised by the ASEAN Football Federation for men's under-16 national teams of Southeast Asia.

A total of 11 teams played in the tournament, with players born on or after 1 January 2003 eligible to participate.

Indonesia beat Thailand 4–3 through penalty shoot-out in the final for their first title in the championship.

The following 11 teams from member associations of the ASEAN Football Federation entered the tournament.

In the knockout stage, the penalty shoot-out was used to decide the winner if necessary.