S. Krishna Kumar (born 6 September 1939, Kowdiar, Trivandrum district, Kerala) is a bureaucrat turned Indian politician from Kerala. He was also a technologist, technocrat, trade unionist, political and social worker, sportsman, Engineer and Civil Servant (Indian Administrative Service). He was a former leader of Indian National Congress in Kerala and joined Bharatiya Janata Party on 20 April 2019. He has been elected to the Lok Sabha three times during 80s and 90s, and was also a minister in the Rajiv Gandhi ministry and Rao ministry. He served as a member of the Lok Sabha representing Quilon (Lok Sabha constituency). He was elected to 8th, 9th and 10th Lok Sabha.