Omurtag is a town at the eastern foot of Stara Planina in northeastern Bulgaria, part of Targovishte Province, situated at 525 m above sea level. It is the administrative centre of the homonymous Omurtag Municipality. As of February 2011, the town had a population of 7,369. A notable natives are Aleksandar Aleksandrov, one of the two Bulgarian cosmonauts, and Viktor Yosifov, captain of the Bulgaria men's national volleyball team.