"Sachivottama" Sir Chetput Pattabhiraman Ramaswami Iyer, KCSI, KCIE (12 November 1879 – 26 September 1966), popularly known as Sir C. P., was an Indian lawyer, administrator and politician who served as the Advocate-General of Madras Presidency from 1920 to 1923, Law member of the Executive council of the Governor of Madras from 1923 to 1928, Law member of the Executive Council of the Viceroy of India from 1931 to 1936 and the Diwan of Travancore from 1936 to 1947. Ramaswami Iyer was born in 1879 in Madras city and studied at Wesley College High School and Presidency College, Madras before qualifying as a lawyer from the Madras Law College. He practised as a lawyer in Madras and succeeded S. Srinivasa Iyengar as the Advocate-General of the Madras Presidency. He subsequently served as the Law member of the Governor of Madras and of the Viceroy of India before being appointed Diwan of Travancore in 1936.