Sebastián Javier Francini (born September 8, 1989) is an Argentine actor and singer. He is perhaps the best known for his role of Sebastián Mancilla in Chiquititas franchise by Cris Morena – television series (1998–2001), play (2001) and film Chiquititas: Rincón de Luz (2001). Francini won Martín Fierro Award for Best Child Actor for his role in Chiquititas in 1999.

Francini is a supporter of Racing football club. He is also a fan of Harry Potter series, and cites J. K. Rowling as his favourite writer.Francini admires rock music and musical group Bon Jovi.