Professor Muhammed Monsooruddin (Bengali: মুহম্মদ মনসুরউদ্দীন ) (31 January 1904 – 19 September 1987) was an eminent Bengali author, literary critic, essayist, lexicographer and biographer from Bangladesh. He was an authority on folklore and was famous for a huge collection of age-old folk songs, mostly anthologised in thirteen volumes under the title Haramoni. In recognition of his lifelong contribution to folklore collection and research, the Rabindra Bharati University awarded him D.Litt.