What is Rajesh Koothrappali's full name?

Rajesh Koothrappali’s full name is Rajesh Ramayan Koothrappali.

The character is usually called Raj, a nickname derived from Rajesh, or simply Koothrappali by his friends. He is an astrophysicist from New Delhi, India, and one of the central members of The Big Bang Theory’s friend group. Kunal Nayyar played Raj throughout the original series.

Raj’s professional identity is important to the show: he works in astrophysics and becomes involved in research concerning astronomical objects and phenomena. His friendships with Sheldon Cooper, Leonard Hofstadter, Howard Wolowitz, and later Amy and Bernadette provide many of the series’ recurring stories. His parents, Dr. V. M. Koothrappali and Mrs. Koothrappali, are frequently mentioned and sometimes appear through video calls.

Viewers may confuse Rajesh Ramayan with Raj, but Raj is only his common nickname, not a separate given name. Another common mix-up is treating Koothrappali as a first name; it is his family name. Raj is also distinct from his sister Priya Koothrappali, who has a major connection to Leonard during the series.