Jamal Nazrul Islam FRAS (24 February 1939 – 16 March 2013) was a Bangladeshi mathematical physicist and cosmologist.

His ancestral home is at Jujkhola Narayanhat of Fatikchhari Upazila of Chittagong District, East Bengal.

Islam obtained his PhD in applied mathematics and theoretical physics from Trinity College, Cambridge in 1968, followed by a DSc in 1982.

Particularly noteworthy are Black Hole, published by the Bangla Academy, "The Mother Tongue, Scientific Research and other Articles" and "Art, Literature and Society".

Islam held a deep love for his homeland of Bangladesh, returning there after earning his PhD and DSc, after the 1971 independence war.

[7] Islam died on 16 March 2013 in Chittagong at the age of 74, having been admitted to the hospital two days prior with diabetes and other issues.