Abdul Qadeer Khan, (born: 1st April, 1936), (D.Eng, FPAS, Sc.D, HI, NI (twice)) (Urdu: ڈاکٹر عبد القدیر خان ); more widely known as Dr. A. Q. Khan, is a Pakistani nuclear scientist and a metallurgical engineer who served as the Director-General of the Kahuta Research Laboratories (KRL) from 1976 till 2001. Abdul Qadeer Khan is widely regarded as the founder of HEU based Gas-centrifuge uranium enrichment programme for Pakistan's nuclear deterrence programme. His middle name is alternatively rendered as Quadeer, Qadeer or Gaudeer, and his given names are usually abbreviated to A.Q..
After years of home arrest, the Islamabad High Court (IHC) on 6 February 2009 declared Abdul Qadeer Khan to be a free citizen of Pakistan, allowing him free movement inside the country. The verdict was rendered by Chief Justice Sardar Muhammad Aslam. In September 2009, expressing concerns over the Lahore High Court’s decision to end all security restrictions on Khan, the United States warned that Khan still remains a "serious proliferation risk".
Khan was born in 1936 in Bhopal, India. His father Abdul Ghafoor Khan was an academic who served in the Education Department of the British Government of India and after retirement in 1935, he settled permanently in Bhopal. In 1947, the family, migrated from India to Pakistan. Khan studied in St. Anthony's High School of Lahore, and then enrolled at the D.J. Science College of Karachi. There, he took B.Sc. in Physics and B.A. in Mathematics under the supervision of Suparco physicist Dr. Bashir Syed. In 1956, he attended Karachi University and obtained a B.Sc. degree in Metallurgy in 1960.