Sweden participated at the 2018 Summer Youth Olympics in Buenos Aires from 6 to 18 October 2018. 18 athletes competed for the country at the games.
Sweden qualified one player based on the Badminton Junior World Rankings.
Sweden qualified a boys' team based on their performance at 2017-18 European Youth Continental Cup Final.
Sweden qualified two gymnasts based on its performance at the 2018 European Junior Championship.
Sweden qualified one boat based on its performance at the 2017 World Rowing Junior Championships.
Sweden had eligibility to send a total of eight swimmers to the games after finishing among the top sixteen teams at the 2017 World Aquatics Championships.
Sweden qualified one athlete based on its performance at the 2018 European Youth Olympic Games Qualifier.