Ranjit Lal Jetley(10 March 1923 – 30 March 2018) was an Indian soldier and scientist. He served in World War II and the 1947 Indo-Pakistani War, becoming an artillery regiment commander. He went on to work in armaments research and development, his innovations including an Indian 10mm light field gun and gunning of the Sherman tanks. He also contributed to setting up two major laboratories. Jetley retired in 1979 and moved to the United Kingdom. Jetley was born in Rawalpindi to a military family. His grandfather, Subedar Maya Das Jetley, held the Indian Distinguished Service Medal (IDSM), having served on the North-Western frontier and in World War I; his father, Lt. Col Kundan Lal Jetley, MBE, participated with the British Expeditionary Forces in Burma and Shanghai, China during peacetime, and served in World War II. Jetley's uncles, Major Mangal Sain Jetley, and Major Inder Sen Jetley, also served in World War II. Jetley's mother, Kaushaliya Rani, was the daughter of High Court advocate Shivram Jhingan. Jetley was educated at Quetta, Lansdowne, and Dehra Dun, followed by higher education at the Gordon Mission College, Rawalpindi.