Lithuania competed at the 2018 Summer Youth Olympics, in Buenos Aires, Argentina from 6 October to 18 October 2018.
Athletics
Boys shot put - Dominykas Čepys
Boys Discus Throw - Matas Makaravičius
Boys 110 m Hurdles - Dovidas Petkevičius
Gymnastics
Artistic
Lithuania qualified one gymnast based on its performance at the 2018 European Junior Championship.
Girls' artistic individual all-around - Eglė Stalinkevičiutė
Modern pentathlon
Elžbieta Adomaitytė
Aivaras Kazlas
Rowing
Lithuania qualified one boat based on its performance at the 2017 World Rowing Junior Championships.
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
Shooting
Greta Rankelytė - Girls 10m Air Pistol
Individual
Team
Swimming
Kotryna Teterevkova
Agnė Šeleikaitė
Alanas Tautkus
Arijus Pavlidi
Table tennis
Lithuania qualified one table tennis player based on its performance at the European Continental Qualifier.