Cinnamanur Subramaniam Chellappa (Tamil: சி. சு. செல்லப்பா) (29 September 1912 – 18 December 1998) was a Tamil writer, journalist and Indian independence movement activist. He belonged to the "Manikodi" literary movement along with Pudhumaipithan, Ku Pa Ra, Va. Ramasamy, N. Pichamoorthi and A. N. Sivaraman. He also founded Ezhuthu, a literary magazine. His novel Suthanthira Thagam won the Sahitya Akademi Award for 2001.