Lisiya Ridge is the ice-covered ridge rising to over 2100 m at the base of Magnier Peninsula, Graham Coast on the west side of Antarctic Peninsula, extending 16 km in northeast-southwest direction between the heads of Leroux Bay and Bigo Bay, and 11 km wide. Bounded by Comrie Glacier to the south and a tributary to Luke Glacier to the east. Featuring Mount Bigo at its southwest extremity and Mount Perchot in its central part. Precipitous, partly ice-free northwest slopes drained by the glaciers Muldava, Nesla and Kolosh.