Admiral R Hari Kumar PVSM, AVSM, VSM, ADC (born 12 April 1962) is retired flag officer in the Indian Navy. He served as 25th Chief of the Naval Staff (CNS). Previously, he served as the Flag Officer Commanding-in-Chief, Western Naval Command. In his prior appointments, he served as the Chief of Integrated Defence Staff, Chief of Personnel, Controller Personnel Services, the Flag Officer Commanding Western Fleet, Flag Officer Sea Training and the Chief of the Staff of the Western Naval Command. He was the Commandant of the Naval War College, Goa and served as a naval advisor to the government of Seychelles. He is an alumnus of National Defence Academy, the Naval War College, the Army War College, Mhow and the Royal College of Defence Studies.