Przybyszewski Island (76°58′S148°45′W) is an ice-covered island 12 nautical miles (22 km) long in the Marshall Archipelago. It lies 3 nautical miles (6 km) east of Cronenwett Island in the western part of Sulzberger Ice Shelf. The island was charted from aircraft of the USS Glacier under Captain Edwin A. McDonald, U.S. Navy, in 1962. Named by him for Lieutenant (j.g.) V. A. Przybyszewski, U.S.