Bistra Glacier is 1 nautical mile long and 0.4 nautical miles wide glacier on the northwest side of Imeon Range on Smith Island in the South Shetland Islands, Antarctica. It is situated southwest of Chuprene Glacier and northwest of Dragoman Glacier, drains the west slopes of Mount Foster and the north slopes of Slaveykov Peak, and flows northwestwards of Zavet Saddle to enter Drake Passage south of Garmen Point.