Cecil Aldary Portocarrero Thiré (Rio de Janeiro, May 28, 1943 – Rio de Janeiro, October 9, 2020) was a Brazilian actor and director. He acted in film, theater and television and was also a professor of acting.

Cecil was the only child of the marriage between actress Tônia Carrero and artist Carlos Arthur Thiré. He is the father of the actors: Miguel Thiré, Carlos Thiré and Luísa Thiré.