Thaísa Grana Pedretti (born May 15, 1999) is a Brazilian professional tennis player.

[1] As of late 2023, they started working together with Brazilian former tennis player Flávio Saretta as a coach.

[3] In December 2023, she won the singles and doubles titles at the ITF W15 tournament in Buenos Aires, Argentina.

[5] In February 2024, she played in the doubles final at the ITF W50 tournament held in Mexico City.

[6] In November 2024 Partnering Diae El Jardi, Grana Pedretti won her first major ITF W50 tournament Austin in United States, defeating Whitney Osuigwe and Alana Smith in the final.