Sampat Singh (born 20 April 1949) is a former Finance Minister of Haryana, India. As a Janata Party candidate, he was elected to the Haryana Legislative Assembly from the in 1982 and has been re-elected on five occasions. He was leader of the opposition from 1991 to 1996. His six election successes made him the most senior Indian National Congress legislator in 12th Haryana assembly. He has held many important portfolios in state government as minister.