Rajan is of Indian origin, derived from the Sanskrit word 'raj', meaning 'king' or 'rule'. It is popular among people of Hindu faith and can be found predominantly in India, Nepal, and other South Asian countries. The name Rajan has gained international recognition due to its use by notable figures such as Rajanikanth, a prominent Indian actor, and Raghuram Rajan, an acclaimed economist and former Governor of the Reserve Bank of India.
The name Rajan experienced varying popularity over the years, with a significant spike starting from 1972 until peaking in 1986 with consistent high numbers. After 1986, there was a gradual decline in its popularity until 2007 when it started to increase again. However, since 2013, there has been another steady decrease in the number of births named Rajan, reaching a recent low of 5 births in 2022 and 8 births in 2023. Overall, over the span of 57 years (from 1966 to 2023), there have been a total of 1014 births with the name Rajan.