Cengiz Küçükayvaz (born 30 July 1968) is a Turkish actor who usually appears in comedic roles.

Cengiz Küçükayvaz graduated in Theatre from Dokuz Eylül University's Faculty of Fine Arts. He began his professional acting career at the Tuncay Özinel Theatre and the Hadi Çaman Theatre. Küçükayvaz has appeared in several films and TV series including Reyting Hamdi, Çiçek Taksi, Lalelide bir Azize, Kahpe Bizans, the rebooted Hababam Sınıfı series, Maskeli Beşler series, Süper Ajan K-9 and Yedi Kocalı Hürmüz.

In 2008, he founded the Cengiz Küçükayvaz Theatre, named after himself. In the nineties, he also took part in the clip of Kibariye's song, "Alıştık artık". (literal translation is "We get used to it")