S. P. Jananathan (7 May 1959 – 14 March 2021) was an Indian film director and screenwriter who worked in Tamil cinema.

Jananathan worked as an assistant to directors like B. Lenin, Bharathan, Vincent Selva and Keyaar.

In 2015, Jananathan directed the political thriller Purampokku Engira Podhuvudamai, featuring Arya, Vijay Sethupathi, and Shaam.

[8][9] Prior to his death, he underwent treatment at a private hospital in Chennai and was under ventilator support.

[10][11] He was admitted in the ICU on 11 March 2021 by his assistants who found him unstable and unconscious at his residence in Chennai.