P. Shilu Ao (December 24, 1916 – September 19, 1988) was a Naga politician who was involved in the negotiations leading to the creation of Nagaland, in the far north-east of India, as one of the states and territories of India in December 1963. Ao then served as the first Chief Minister of Nagaland until August 1966. Ao played a part in persuading the Indian Government and Lok Sabha to accept Nagaland's statehood, but was not able to reconcile many Naga nationalists, who regarded him and his party as stooges of the central government.