Dembiya (Ge'ez ደምቢያ dembīyā; also transliterated Dembea, Dambya, Dembya, Dambiya, etc.) is a historic region of Ethiopia, intimately linked with Lake Tana. According to the account of Manuel de Almeida, Dembiya was "bounded on East by Begemder, on South by Gojjam, on West by Agaws of Achefer and Tangha.