Mohammad Hafeez Qureshi (Urdu: محمد حفيظ قريشى; January 28, 1930 – August 11, 2007), SI, HI, popular as Hafeez Qureshi, was a Pakistani nuclear scientist and a mechanical engineer, known for his classified work at the Pakistan Atomic Energy Commission (PAEC).Known for being a director of PAEC's secretive divisions charged with testings of nuclear materials, he oversaw the work on weapon systems manufacturing and gained expertise on engineering applications of nuclear physics and mechanics.