| Nickname: | Gia |
| Fullname: | Giancarla Dimich Trevisan |
| Nationality: | Italian |
| National Team: | Italy (10 caps) |
| Club: | |
| Birth Date: | 17 February 1993 |
| Birth Place: | Laguna Niguel, USA |
| Residence: | Los Angeles, USA |
| Height: | 1.64 m |
| Weight: | 53 kg |
| Sport: | Athletics |
| Event: | 400 metres |
Giancarla Trevisan (born 17 February 1993) is an American-born Italian female sprinter who won one national title at senior level. She also won two bronze medals at international senior level with the Italian national track relay team.
Her father is Italian migrated in USA. Opted from Italian citizenship from 2017.[1] She lives in Los Angeles with her American husband Corey Butler, married in the spring of 2018.[2]
| Year | Competition | Venue | Position | Event | Measure | Notes | |
|---|---|---|---|---|---|---|---|
| 2019 | IAAF World Relays |  Yokohama | 3rd | 4×400 m relay | 3:27.64 | ||
| European Team Championships |  Bydgoszcz | 3rd | 4×400 m relay | 3:27.32 | [4] | ||
| 2023 | World Championships |  Budapest | 7th | 4×400 m relay | 3:24.98 |