Sleipnir Glacier (66°29′S 63°59′W / 66.483°S 63.983°W) is a glacier 10 nautical miles (18 km) long, flowing into the west side of Cabinet Inlet between Balder and Spur Points, on the east coast of Graham Land, Antarctica. The Vologes Ridge is in the central portion of the glacier.
The feature was charted in 1947 by the Falkland Islands Dependencies Survey (FIDS), who named it after the horse of the mythological Norse god Odin. It was photographed from the air during 1947 by the Ronne Antarctic Research Expedition (RARE) under Ronne.