Mohammad Hidayatullah was the only Chief Justice of India who also served as President of India.
- M. Hidayatullah was the 11th Chief Justice of India from 25-2-1968 to 16-12-1970.
- While he was Acting President of India from July 20, 1969, to August 24, 1969, during the Prime Ministership of Indira Gandhi.
- Serially, he was the fifth President of India.
- He also served as the Vice President of India (1979-84).