Cumberland East Bay is a bay forming the eastern arm of Cumberland Bay, South Georgia. It is entered between Sappho Point and Barff Point, where it is nearly 3 miles (4.8 km) wide, and extends 8 miles (13 km) in a southeast direction. This feature was surveyed by the Swedish Antarctic Expedition, 1901–04, who named it "South Bay". It was remapped during 1926–29 by Discovery Investigations personnel and renamed "East Cumberland Bay", which is more descriptive of its geographic position. The shortened form "East Bay" was simultaneously used. Following the South Georgia Survey, 1951–52, the UK Antarctic Place-Names Committee proposed that the name be altered to Cumberland East Bay and that all other names be rejected.