Kilifarevo (Bulgarian: Килифарево) is a small town in central northern Bulgaria, administratively part of Veliko Tarnovo municipality, Veliko Tarnovo Province. Previously a village, it was proclaimed a town in 1973.
Ruins and remains are proof ot the presence of civilization in the neighbouring area since the times of the Thracians. A fortress which guarded a pass through the Balkan Mountains existed nearby during the Roman Empire. During the Second Bulgarian Empire and more precisely the rule of Ivan Alexander (1331–1371), Kilifarevo was a centre of literary activity and the site of Theodosius of Tarnovo's school and monastery which actively promoted the spiritual practice of hesychasm.
Upon Bulgaria's conquest by the Ottoman Empire, the monastery was besieged, captured and razed by the invading Ottomans. It was later reconstructed and still exists today. During the Ottoman rule, Kilifarevo was the birthplace of Velcho Atanasov the Glazier, who organized the Velchova zavera (Велчова завера), an unsuccessful uprising against the Ottomans, in 1835.