Mamunur Rashid was born on 29 February 1948 in the village Bhabandatta inGhatail Upazila ofTangail District.[6] He is the eldest of five siblings.[7] He completed his SSC from Bolla Coronation High School[8] and a Diploma in Civil Engineering fromDhaka Polytechnic Institute. After diploma, he passed BA and MA in political science from Dhaka University.[9]
Mamunur Rashid moved toDhaka in 1963.[8] He started writing drama plays in the 1960s.[6] He foundedAranyak in 1972.[8] He served as the chief secretary of the troupe.[10] One of the most notable production of his group isRarang which deals with the life ofSantal. its another production isEbong Biddyasagar.[11] Another stage play, titled,Che'r Cycle was written and performed by him.
Mamunur Rashid performed in television plays "Suprobhat Dhaka", "Somoy Osomoy", "Ekhane Nongor" and "Pachar"[12] and in filmsMonpura (2009),Mrittika Maya (2013) andNekabborer Mohaproyan (2014).[13]
The radio plays Mamunur Rashid performed in includeKabor (1972) andParuler Shangshar (2011).[14]
He has also performed in Mostofa Sarwar Farooki's web seriesLadies & Gentlemen.
In May 2025, an attempted murder case was filed against Mamunur Rashid over a student of Alia Madrasa getting injured inOld Dhaka during protests against Prime MinisterSheikh Hasina in August 2024.[15]