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

Medals awarded to participants of mixed-NOC (Combined) teams are represented in italics.

These medals are not counted towards the individual NOC medal tally.

Qualification Legend: FA=Final A (medal); FB=Final B (non-medal); FC=Final C (non-medal); FD=Final D (non-medal); SA/B=Semifinals A/B; SC/D=Semifinals C/D; R=Repechage Greece qualified one table tennis player based on its performance at the European Continental Qualifier.

[1] Meissnek (GER)W 4–2