San Marino participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018.
Archery
San Marino qualified one athlete.
Individual AthleteEventRanking roundRound of 32Round of 16QuarterfinalsSemifinalsFinal / RankScoreSeedOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreLeonardo TuraBoys' Individual58432 L 2-6did not advance
Team AthletesEventRanking roundRound of 32Round of 16QuarterfinalsSemifinalsFinal / RankScoreSeedOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreMixed Team125932L 1–5did not advance17
Swimming
San Marino qualified two athletes.
AthleteEventHeatsSemifinalsFinalTimeRankTimeRankTimeRankRaffaele TamagniniBoys' 50 metre freestyle24.8738did not advanceBoys' 100 metre freestyle55.5539did not advanceArianna ValloniGirls' 400 metre freestyle4:26.8722colspan=2 did not advanceGirls' 800 metre freestyle8:57.0015colspan=2 did not advance
Table tennis
San Marino qualified one athlete. AthleteEventGroup stageRound of 16QuarterfinalsSemifinalsFinal / OppositionScoreRankOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankChiara MorriGirls' singles L 0–4 L 0–4 L 0–44did not advanceIntercontinental–5Mixed team L 0–3 L 0–3 L 0–34did not advance
References