Immediately following the publication of his debut novel, Ahmed emerged as one of the most prominent novelist and story-writer of Bengali literature since Sharat Chandra Chattopadhyay. Humayun Ahmed's books have been bestsellers. He has also achieved success as a screenwriter for television since the late 1980s. In the early 1990s, he entered the movie-world and proved to be a successful filmmaker in spite of clear departure from the trend of traditional Bangladeshi movies.
Humayun Ahmed often shows a fascination for creating stories around supernatural events; his style is characterized as magic realism. Faizul Latif Chowdhury (2007), Review of Lilaboti, Prothom Alo, Dhaka.
Humayun Ahmed was born to Foyzur Rahman (a high-ranked police officer and writer, who gained martyrdom in the liberation war of Bangladesh) and Ayesha Foyez on 13 November 1948 in Kutubpur of Mymensingh district in then East Pakistan, now Bangladesh. Humayun Ahmed's younger brother Muhammed Zafar Iqbal, a university professor, is also a famous writer, newspaper columnist who attained fame for writing science fictions and youngster novels.Another brother, Ahsan Habib (cartoonist), is the editor of the only cartoon magazine of Bangladesh, Unmad.
Humayun Ahmed was married to Gultekin, granddaughter of Principal Ibrahim Khan, in 1973. They had five children, but were divorced in 2003. Later Ahmed married Meher Afroz Shaon.