Biswanath Das (March 8, 1889 – June 2, 1984) was an Indian politician. He was the Prime Minister of Odisha Province of British India 1937–39, the Governor of Uttar Pradesh 1962–67 and later the Chief Minister of Odisha 1971–72.
Biswanath Das was a member of the legislative council of Madras Province from 1921 to 1930. After the separation of Odisha on April 1, 1936 he became its Prime Minister on July 19, 1937.
Biswanath Das became a member of the Constituent Assembly of India in 1946. After the Odisha Vidhan Sabha election in 1971, the Utkal Congress, the Swatantra Party and the Jharkhand Party formed a United Front and he became the Chief Minister of the United Front government. He was in office from April 3, 1971 to June 14, 1972.