Ishrat Hussain Usmani (Urdu: عشرت حسین عثمانی) (15 April 1917 – 17 June 1992) NI, best known as I. H. Usmani, was a Pakistani atomic physicist, and later a public official who chaired the Pakistan Atomic Energy Commission (PAEC) from 1960 to 1971 as well as overseeing the establishment of the Space Research Commission.