| Sebastiano Gastaldi | |
| Birth Date: | 12 June 1991 |
| Birth Place: | Piove di Sacco, Italy |
| Height: | 171 cm |
| Weight: | 73 kg |
| Sport: | Alpine skiing |
| Club: | Club Andino Bariloche |
Sebastiano Gastaldi (born 12 June 1991 in Piove di Sacco[1]) is an alpine skier from Argentina. He competed for Argentina at the 2014 Winter Olympics in the slalom and giant slalom.[2] He competed at the 2018 Winter Olympics in the men's giant slalom.
His sister is also a skier, Nicol Gastaldi.