K. G. Ambegaokar was the fifth Governor of the Reserve Bank of India from 14 January 1957 to 28 February 1957. He was a member of the Indian Civil Service, and served as Finance Secretary before his appointment as Deputy Governor of the RBI. On the resignation of B Rama Rau he took over as the Governor. His was the third shortest tenure (45 days) after B. N. Adarkar (42) and Amitav Ghosh (20). Compared to the latter two Governors Ambegaonkar's signature as RBI Governor does not appear on any Indian Rupee note, but his signature as Finance Secretary appeared on the second, third, and fourth Rupee one notes issued after independence.