Pleystor Glacier (, ) is the 2.2 km long and 1.2 km wide glacier on the west side of Brugmann Mountains on Liège Island in the Palmer Archipelago, Antarctica. It is situated south-southwest of Zbelsurd Glacier, draining the south slopes of Mishev Bluff, the southwest slopes of Pavlov Peak and the northwest slopes of Mount Vesalius, and flowing west-northwestwards into Vapa Cove.
The glacier is named after the Thracian god Pleystor.
Pleystor Glacier is centred at . British mapping in 1978 and 1980.