| S. Rangarajan | |
| Birth Name: | Srinivasan Rangarajan |
| Birth Date: | 10 April 1936 |
| Birth Place: | Chennai, Tamil Nadu |
| Occupation: | journalist, film producer |
Srinivasan Rangarajan (10 April 1936 - 8 February 2007) was an Indian journalist, entrepreneur, cricketer, film producer and socialite. He is the youngest son of K. Srinivasan and grandson of S. Kasturi Ranga Iyengar.
Rangarajan was born in Madras to K. Srinivasan, Editor and Managing Director of The Hindu on 10 April 1936. He studied in Madras and became a Director in The Hindu in 1958.