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