Gegharkunik is a province (marz) of Armenia. Gegharkunik was named after Gegham. Gegham was a Haykazuni King and fifth generation after Hayk. Gegham was the father of Sisak of Syunid nobles and Arma the grandfather of Ara the Beautiful. Geghama Mountains and Geghama lake, presently Lake Sevan, were named after Gegham.
Gegharkunik Province is in the east of Armenia, bordering Azerbaijan. At 5,348 square kilometers, Gegharkunik is the largest province in Armenia by area. However, approximately 1,278 square kilometers of its territory is covered by Lake Sevan, the largest lake in the Caucasus and a major tourist attraction of the region. It has an exclave inside Azerbaijan, Artsvashen, which came under Azerbaijani control during the Nagorno-Karabakh War. Its capital is Gavar.