Kailash Nath Singh Yadav (born 3 July 1957) is an Indian politician for the Chandauli (Lok Sabha constituency) in Uttar Pradesh. He was a member of the 14th Uttar Pradesh Legislative Assembly. He was the Minister of Science and Technology and Minister of Wasteland Development and Water Resources in the Mayawati-led Uttar Pradesh government from 2002 to 2003.