Gyan Singh Sohanpal (11 January 1925 – 8 August 2017), was an Indian politician affiliated with the Indian National Congress and a member of the West Bengal Legislative Assembly. He is affectionately known as Chacha Ji ("Uncle" in English) in his constituency of Kharagpur Sadar. He won his seat Kharagpur Sadar in 1969, 1971, 1972, 1982, 1987, 1991, 1996, 2001, 2006 and 2011. Since 1969, he only lost elections in 1977 and 2016 when he was 91 years old. He was MLA for 10 terms.