Matías Piñeiro
- Birthday: 1982-05-11
- Place of birth: Buenos Aires, Argentina.
Matías Piñeiro (born 11 May 1982) is an Argentine filmmaker, screenwriter and performer known for his work in Rosalinda, Viola, La Princess of France and Hermia & Helena. Piñeiro is one of the most prolific filmmakers of his generation and exponent of the new Argentine cinema.
