Valliappan Olaganathan Chidambaram Pillai (5 September 1872 - 18 November 1936), popularly known by his initials, V.O.C. (spelt Vaa. Oo.Ce in Tamil), also known as Kappalottiya Tamizhan "The Tamil Helmsman," was a Tamil political leader. He was a disciple of Bal Gangadhar Tilak. He launched the first indigenous Indian shipping service between Tuticorin and Colombo with the Swadeshi Steam Navigation Company, competing against British ships. At one time a member of the Indian National Congress, he was later charged with sedition by the British government and sentenced to life imprisonment; his barrister license was revoked.