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

Saudi Arabia was given a quota to compete by the tripartite committee.

[1] Saudi Arabia qualified one athlete based on its performance at one of the Karate Qualification Tournaments.

[2] Saudi Arabia qualified one athlete based on its performance at the 2018 Asian Youth Championships.

[3]