Kostenets Saddle (Bulgarian: Костенечка седловина, ‘Kostenechka Sedlovina’ \'ko-ste-nech-ka se-dlo-vi-'na\) is the saddle of elevation 1302 m[1][2] in Imeon Range on Smith Island in the South Shetland Islands, Antarctica bounded by Mount Pisgah to the north and the east ridge of Drinov Peak to the south. It overlooks the head of Vetrino Glacier to the west.
The saddle is named after the town of Kostenets in southwestern Bulgaria.