|Died||1997 (aged 79–80)|
|Occupation||botanist, university academic|
Saifud-Din Chaudhury (also known as Dr. S.D. Chowdhury) (October 1917 – 1997) was a Bangladeshi economic botanist, policy planner and university academic. He was a former Vice-chancellor of East Pakistan Agricultural University (later Bangladesh Agricultural University). He was a foundation fellow of Bangladesh Academy of Sciences since 1973. He also served as the president of the academy.
Chaudhury was a student of Government College, Lahore. He completed his bachelor's from Presidency College, Calcutta. He obtained his Ph.D. from the Imperial College of London. He then conducted research on plant breeding at the Beltsville Research Institute in the United States.
Dr. Chowdhury was the son of Khan Bahadur Mahmud Chowdhuri and was from Rankeli, Golapgonj, Sylhet. He was the eldest of four brothers