Nicaragua participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018.
Rowing
Nicaragua was given a quota to compete in rowing.
Boys' single sculls - 1 athlete
Taekwondo
AthleteEventRound of 16QuarterfinalsSemifinalsFinal / OppositionResultOppositionResultOppositionResultOppositionResultRankDavid RobletoBoys' −73 kg L 8-15did not advance
Weightlifting
Nicaragua was given a quota by the tripartite committee to compete in weightlifting.
Girls' events - 1 quota (not used)
References