Ahmed was born on February 21, 1921, in Kutubpur village of Netrokona district of Bangladesh, which was then a part of British Empire.
He joined as the sub-divisional police officer in Pirojpur which was then a sub-division of East Pakistan and participated in the Liberation War of Bangladesh in 1971.
His first son Humayun Ahmed nicknamed Kajal was born in 1948 in his in-law's house of Mohongonj, Netrokona when he started his career as a police in Sylhet.
[4] Pakistan Army on their arrival at Pirojpur learnt about the stance of Faizur Rahman on Bangladesh Liberation War.
They called him in the name of a meeting with the help of some police officials who were supporting the Pakistan Army and shot him dead at the bank of the river Baleshwar on May 5, 1971.