Renato Piau de Sá, known professionally as Tatinho, (born 19 December 1992) is a Brazilian futsal player who plays for Jaraguá Futsal.
Tatinho was formerly a professional footballer who played as a forward. After playing for Ventforet Kofu in Japan, he had problems with agents and became disillusioned with football, not playing football for a few years before getting into futsal.
On 3 January 2024, Tatinho joined Sporting CP. During his time at the club, he won the Portuguese League and Portuguese League Cup.
On 18 February 2025, Tatinho joined Jaraguá Futsal for the 2025 season.