Subhash Kak (born 26 March 1947 in Srinagar) is an Indian-American computer scientist and a Hindutva-based historical revisionist. He is the Regents Professor of Computer Science Department at Oklahoma State University–Stillwater and honorary visiting professor of engineering at Jawaharlal Nehru University.
Kak co-authored In Search of the Cradle of Civilization (1995) equating Vedic Aryans with the Harappans and thus, participating in the political controversy around the "indigenous Aryans" theory. The chronology espoused in this book is based on the archaeoastronomical readings obtained by correlating textual references and archaeological remains.
In 2019, the Government of India awarded him with Padma Shri, the fourth highest civilian award in India.