Mostich Hill (Bulgarian: хълм Мостич, ‘Halm Mostich’ \'h&lm 'mos-tich\) is a rocky hill rising to 130 m in the southwestern part of Rugged Island off the west coast of Byers Peninsula of Livingston Island in the South Shetland Islands, Antarctica. Situated 780 m northeast of Benson Point, 3.16 km south-southeast of Cape Sheffield, and 3.78 km west of Radev Point.
The hill is named after Mostich, Ichirgu-boil (chief boyar) of Czar Simeon the Great and Peter I of Bulgaria (10th Century AD).