| Sebastián Martelli | |
| Fullname: | Sebastián Alejandro Martelli |
| Birth Date: | 13 March 1996 |
| Birth Place: | Buenos Aires, Argentina |
| Height: | 1.70 m |
| Position: | Left midfielder |
| Currentclub: | Argentino de Quilmes |
| Youthclubs1: | Vélez Sarsfield |
| Years1: | 2014–2017 |
| Clubs1: | Vélez Sarsfield |
| Caps1: | 4 |
| Goals1: | 0 |
| Years2: | 2015 |
| Clubs2: | → Veracruz (loan) |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2016 |
| Clubs3: | → Lobos BUAP (loan) |
| Caps3: | 5 |
| Goals3: | 0 |
| Years4: | 2017–2018 |
| Clubs4: | Temperley |
| Caps4: | 11 |
| Goals4: | 0 |
| Years5: | 2018 |
| Clubs5: | Coquimbo Unido |
| Caps5: | 3 |
| Goals5: | 0 |
| Years6: | 2019–2020 |
| Clubs6: | Almirante Brown |
| Caps6: | 5 |
| Goals6: | 1 |
| Years7: | 2021 |
| Clubs7: | Temperley |
| Caps7: | 1 |
| Goals7: | 0 |
| Years8: | 2022– |
| Clubs8: | Argentino de Quilmes |
| Caps8: | 13 |
| Goals8: | 1 |
| Club-Update: | 18:01, 3 August 2022 (UTC) |
Sebastián Alejandro Martelli (born March 13, 1996) is an Argentine footballer who plays for Argentino de Quilmes.
Martelli debuted for Vélez Sarsfield under José Oscar Flores' coaching, in a 0–1 defeat to Belgrano for the 2014 Argentine Primera División season.[1]
The midfielder played the 2015–16 on loan in México, first for Veracruz and later for Lobos BUAP.