Sundarrajan
Sundarrajan is a South Indian surname. Notable people with the surname include:
- Major Sundarrajan (1935–2003), Tamil actor
 - R. Sundarrajan (born 1950), Tamil director and actor
 - R. Sundarrajan (politician) (died 2020), Indian politician
 
See also
- Sundar Raj (active 1967–present), Indian actor
 - R. Sunder Raj, aka Sunder Raj or Sundar Raj, Malayalam film producer, known for the 1933 silent film Marthanda Varma
 - Sunder Raj, an Indian fisherman who was killed in 2006 by Sentinelese people