Rangarajan
Rangarajan is an Indian surname and may refer to

 C. Rangarajan, Indian economist, former Governor of the Reserve Bank of India
 G. N. Rangarajan, Indian film director and writer
 Mahesh Rangarajan, Indian author and historian
 Manakkal Rangarajan, Carnatic singer from India
 Ra. Ki. Rangarajan, Indian writer
 S. Rangarajan, Indian journalist
 Sujatha Rangarajan, Indian writer and novelist
 Rangarajan Kumaramangalam, Indian politician
 Sudhangan, Indian journalist and editor also known by his birth name Rangarajan