Sharadindu Bandyopadhyay (30 March 1899 – 22 September 1970) was a Bengali writer. He was also actively involved with Bengali cinema as well as Bollywood. His most famous creation is the fictional detective Byomkesh Bakshi.

He wrote different forms of prose: novels, short stories, plays and screenplays. However, his forte was short stories and novels. He wrote historical fiction like Kaler Mandira, GourMollar (initially named as Mouri Nodir Teere), Tumi Sandhyar Megh, Tungabhadrar Teere (all novels), Chuya-Chandan, Maru O Sangha (later made into a Hindi film named Trishangni) and stories of the supernatural with the recurring character Baroda, the Ghost Hunter. Besides, he wrote many songs and poems.