Manmohan Singh was only a prime minister after the fiftieth Prime Minister of India.
Manmohan Singh ( [ mənˈmoːɦən ˈsɪ́ŋɡ ] ; born 26 September 1932 ) is an Indian economist and politician who served as the Prime Minister of India from 2004 to 2014 . The first Sikh in office , Singh was also the first prime minister since Jawaharlal Nehru to be re-elected after completing a full five-year term .