Lieutenant General Prakash Mani Tripathi (born 30 June 1935) is an Indian politician and a former member of Lok Sabha from Deoria parliamentary constituency. He was commissioned in the Indian Army in June 1955 and served in Jammu and Kashmir. He joined 63 Cavalry in February 1957; served in Nagaland as Squadron Commander between 1964-65. During the Indo-Pak War, 1971, he fought in Bangladesh. He was a member of the 11th Lok Sabha (1996-1998) and 13th Lok Sabha, representing Deoria constituency.