Badruddin Umar

}}}} | image = বদরুদ্দীন মোহাম্মদ উমর.jpg | caption = | birth_date = | birth_place = Bardhaman, Bengal Presidency, British India | death_date = | death_place = Shyamoli, Dhaka, Bangladesh | alma_mater = University of Dhaka
University of Oxford | occupation = Marxist theorist, political activist, historian, writer | party = BSD-ML (Umar) | parents = Abul Hashim (father) | relatives = Abul Kasem (grandfather)
Khan Bahadur Abdul Momen (granduncle)
Nawab Abdul Jabbar (great granduncle) | awards = Independence Award (2025) }}

Badruddin Umar (; 20 December 1931 – 7 September 2025) was a Bangladeshi Marxist–Leninist theorist, political activist, historian, writer, intellectual and leader of the Communist Party of Bangladesh (Marxist–Leninist) (Umar). His father, Abul Hashim, was a prominent politician in the Indian subcontinent. Provided by Wikipedia