C. K. Chandrappan (10 November 1935 – 22 March 2012) was a politician from Kerala, India. He was the Kerala state secretary of the Communist Party of India (CPI) and the president of All India Kisan Sabha at the time of his death. He was a member of the Lok Sabha of India representing the Thalassery (Lok Sabha constituency) from 1971 to 1977, Kannur (Lok Sabha constituency) from 1977 to 1980 and Thrissur (Lok Sabha constituency) from 2004 to 2009. Chandrappan served as Member of the Legislative Assembly of Kerala from 1991 to 1996 representing Chertala.
Chandrappan started his political life when he was a member of leftist youth federations in the 1970s. He took part in the Goa liberation movement and was jailed as a political prisoner on various occasions in Delhi, Kolkata and Thiruvananthapuram.
