The Peshtera Glacier (Bulgarian Lednik Peshtera) is a glacier on the Rozhen Peninsula, Livingston Island in the South Shetland Islands, Antarctica situated southwest of Ruen Icefall and north of Charity Glacier.

The head of the glacier is bounded by MacKay Peak (approx.

It flows 2 km north-northwestward to terminate at the northeast extremity of Zagore Beach.

The feature is named after the Bulgarian town of Peshtera, in Pazardzhik Province.

This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.