Rajan, a former chief economist at the International Monetary Fund, will be 50 years and six months old when he takes over as the 23rd Governor on September 5.
When Manmohan Singh became Governor of the Reserve Bank in 1982, he was 10 days short of his 50th birthday. Singh, born on September 26, 1932, took over as the 15th Governor on September 16, 1982. He was appointed by Pranab Mukherjee, the then Finance Minister in the Indira Gandhi government.
Rajan, who succeeds D Subbarao, will be the first non-civil servant in 10 years to steer the RBI. The previous non-IAS RBI Governor was Bimal Jalan, who had an almost six-year stint that ended in 2003.
C Rangarajan, who is the chief economic advisor to Prime Minister Manmohan Singh, served as head of the central bank from December 1992 to November 1997.
The first Governor of the central bank was Sir Osborne Smith, appointed by the British Crown. He was succeeded by another Britisher and Indian Civil Services officer Sir James Braid Taylor in 1937, after which Deshmukh took over.