Navaratna Srinivasa Rajaram (born 1943 in Mysore) is an India based Hindutva activist, notable for his publications from the Voice of India publishing house propounding the "Indigenous Aryans" hypothesis and asserting that the Vedic period was extremely advanced from a scientific view-point. He has been heavily criticized for propagating pseudo-scientific fringe views and engaging in historical negationism, and his claim that he has deciphered the Indus script was rejected.

Rajaram holds a Ph.D. degree in mathematics from Indiana University and had taught in American universities for over 20 years. He is the grandson of Navaratna Rama Rao, a colonial scholar and author of regional fame.