Sakellari Peninsula is a large ice-covered peninsula between Amundsen Bay and Casey Bay in Enderby Land, Antarctica. This region was photographed by Australian National Antarctic Research Expeditions (ANARE) in 1956-57 and by the Soviet expedition in the Lena in 1957. Named by the Soviet expedition for , Soviet scientist and navigator. Cape Streten is an ice cape at the northeast tip of the Sakellari Peninsula, forming the west side of the entrance to Amundsen Bay.