| Event: | Nacra 15 |
| Games: | 2018 Summer Youth |
| Venue: | Club Nautico San Isidro |
| Dates: | 8–13 October |
| Competitors: | 28 |
| Nations: | 14 |
| Win Label: | Winning total |
| Win Value: | 37 points |
| Gold: | Dante Cittadini Teresa Romairone |
| Goldnoc: | ARG |
| Silver: | Titouan Petard Kenza Coutard |
| Silvernoc: | FRA |
| Bronze: | Laila Van der Meer Bjarne Bouwer |
| Bronzenoc: | NED |
The mixed Nacra 15 competition at the 2018 Summer Youth Olympics in Buenos Aires took place between 8–13 October at Club Nautico San Isidro. Thirteen races were held.