Chowdhury Mazhar Ali (born: 7 August 1970; Popularly known as Shiba Shanu) is a Bangladeshi actor. He is mostly known for his villain role in Cinema of Bangladesh. In 1998, He started his film career as an actor with the film Matrivumi. His notable works as an actor are Commando, Tungiparar Miya Bhai, Bir, Abbas, Password, Naqaab, Captain Khan, Chalbaaz, Rangbaz, Premi O Premi, Rajneeti, Mental, Shikari, and Warning.
In 1998, Shanu made his debut in the film industry with the film Matribhoomi. In 2023, he played as Shakib Khan's elder brother with a cameo appearance in Himel Ashraf's tragic romance Priyotoma, which became the highest grossing Bangladeshi film of all-time.