Hassan Jaff was born in the twenty second of September 1941 in Kalar village, and completed the elementary and secondary education in Kifri and Khanaqeen city, then his university learning in the CollegeLiterature at Baghdad.

With Jalal Talabani & Saleh Yousfi – Baghdad - 1963

He traveled in 1966 to for post graduate studies where he completed a Master of Art degree in history in the College of Literature at Tehran University in 1972, then a Ph.D. in Islamic studies in 1974 from the college of Islamic Knowledge at the same university.

Where he became an assistant professor in 1975 until the outbreak of the Khomaini revolution, which impelled him and his family to leave Iran of the political conditions, and returned to Iraq beginning he was appointed at the Literature, history section, at Baghdad University as assistant professor.  He then became Director General of the Awqaf Ministry.

Outbreak of the Iraqi-Iranian war, he joined the Iranian Kurdish opposition movement against the Khomaini regime, and took charge of Halabcha sector and continued fighting until 1983 when he withdrew because of his health conditions.

He was elected member of the National Assembly representing the city of Sulaimania. From then after he indulged himself in writings, research, and investigations in the sources of Kurdish history and the Kurds in particular.

He wrote several books on the subject as well as research papers and articles that were published in newspapers and periodicals in Kurdish, Arabic, and Farsi.

Amongst his books: AlWajeez fi Tareekh (A short history of Iran in four parts. And Hathihi Alaqaweel Behathihi Alma’eer Lam Yabqa laha Rawaj, These Schemes on These Parameters Have no More Grounds). He translated Rihlat Reej fe shemal AlIraq (The Journey of Reej in the North of Iraq) from Farsi.

Dr. Hasan in still continuing in teaching, research, and writing, and became head of the history section of the  Studies. Higher for History Arabic of Institute .

Dr. Hasan was an activist in the nationalist movement of Iraq. In 1962 he joined the students demonstrations, and was a member of the Supreme Committee of the Kurdish Student Union; he was imprisoned for his patriotic activities during the rule of Abdul Kareem Qassim and sentenced for five years together with other students of the university.

He was released after the 14 of Ramadhan revolution in 1963, and immediately after that he joined the Kurdish armed movement in the Qara Dagh sector as a political advisor, and continued in the Kurdish movement until 1965, when, upon the instructions of Mullah Mustafa Barazani, returned to his studies to finish the university in 1966.

Dr. Hasan Jaff is regarded as a moderate who believes in the national rights of the Kurdish people in all countries where they cohabit with their fellow citizens,and his efforts in raising the cultural standards of his people, for achieving the hopes of the Kurds to take their place under the sun as other peoples who live 0n this planet .

He married Galawiz Jaff the daughter of Dawood Beg Jaff and have one daughter Diman & one son Diako .