Question: who is longest serving prime minister of india
Answer: No Name ( birth -- death ) Portrait Prior Office Party ( Alliance ) Elected constituency Term of office Appointed by Jawaharlal Nehru ( 1889 -- 1964 ) Vice President of Executive Council Indian National Congress Phulpur , Uttar Pradesh 15 August 1947 27 May 1964 16 years , 286 days Lord Mountbatten Rajendra Prasad -- Gulzarilal Nanda ( acting ) ( 1898 -- 1998 ) Minister of Labour and Employment Indian National Congress Sabarkantha , Gujarat 27 May 1964 9 June 1964 13 days Sarvepalli Radhakrishnan Lal Bahadur Shastri ( 1904 -- 1966 ) Minister of Home Affairs Indian National Congress Allahabad , Uttar Pradesh 9 June 1964 11 January 1966 1 y