Tonga at the 2018 Summer Youth Olympics

Tonga participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018.

Competitors
The following is the list of number of competitors that participated at the Games per sport.

Archery
Tonga was given a spot to compete in the girl's event by the tripartite committee, but Tonga did not compete in archery.

Athletics
Tonga was given a spot to compete by the tripartite committee.


 * Boys' events - 1 quota

Futsal
Tonga qualified in the girls' tournament by finishing runner's up at the 2017 OFC Youth Futsal Tournament and after New Zealand decided to compete in rugby sevens.


 * Girls' tournament - 1 team of 10 athletes

Swimming
Tonga was given a quota to compete in the boy's event by the tripartite committee.


 * Boys' events - Finau 'Ohuafi

Taekwondo
Tonga was given a quota to compete in the girls' +63 kg event by the tripartite committee, but Tonga did not compete in taekwondo.