Piara Singh Gill, (28 October 1911 - 23 March 2002) was a nuclear physicist who was a pioneer in cosmic ray nuclear physics and worked on the American Manhattan project . Moreover, was the first Director of Central Scientific Instruments Organisation (CSIO) of India. He was research fellow of Chicago University (1940). He was research Professorship fellow of Tata Institute of Fundamental Research (TIFR) (1947), Officer-on-Special Duty (OSD) with the Atomic Energy Commission in New Delhi.



