This article is missing information about some results. Please expand the article to include this information. Further details may exist on the talk page.(October 2018)
Italy qualified a boys' team based on the U18 3x3 National Federation Ranking.[3]
Boys' tournament - 1 team of 4 athletes, Chinellato Riccardo, Donadio Lorenzo, Filoni Niccolò, Ianuale Nicolò;
But Italy took only 3 athletes to Buenos Aires.
Italy were the only team to compete with only 3 players in the tournament. In spite of that they reached up to the quarter-final, where they lost to Ukraine in a thrilling contest.
Italy qualified two pentathletes based on its performance at the European Youth Olympic Games Qualifier.[16] Italy qualified a second female based on its performance at the 2018 Youth A World Championship.[17] The nation must choose between the two girls.
Italy qualified one boat based on its performance at the 2017 World Junior Rowing Championships. Later, Italy qualified a boys' pair boat based on its performance at the 2018 European Rowing Junior Championships.[19]
Boys' pair - 1 boat Castelnovo Nicolas, Zamariola Alberto
Girls' pair – 1 boat Alajdi El Idrissi Khadija, Tonoli Vittoria
Italy qualified two boats based on its performance at the 2017 World Techno 293+ Championships.[20][21] Italy qualified an additional boat based on its performance at the 2018 IKA Twin Tip Racing Youth World Championship.[22] A Nacra 15 boat was qualified based on their performance at the 2018 Nacra 15 World Championships.[23][24]
Italy qualified one sport shooter based on its performance at the 2017 European Championships. Italy later qualified a rifle sport shooter based on its performance at the 2018 European Championships.[25]
Italy qualified three sport climbers based on its performance at the 2017 World Youth Sport Climbing Championships. They also qualified a second female climber based on its performance at the 2017 European Youth Sport Climbing Championships.[26][27]