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.