Dervent Heights (Bulgarian: Дервентски възвишения) are a hilly ridge in Yambol Province in south-eastern Bulgaria (40%) and European Turkey (60%).

[1] The crest is flat and slightly hilly reaching an altitude of 300-450 m with rounded peaks, the highest being Gyurgenbair (555 m), situated in Bulgarian territory at 2 km to the south-west of the village of Kraynovo.

Large areas of the crest and the slopes are covered with deciduous forests and pastures.

[6] Dervent heights are included in the European Union network of nature protection areas Natura 2000.

[7] In the Bulgarian part of the Dervent Heights to the north there are 20 villages: Chernozem, Golyan Dervent, Granitovo, Zlatinitsa, Kraynovo, Lalkovo, Lesovo, Malko Kirilovo, Malko Sharkovo, Malomirovo, Mamarchevo, Melnitsa, Razdel, Sharkovo, Sitovo, Slaveykovo, Srem, Voden, Valcha Polyana and Zlatinitsa.