Cumberland West Bay is a bay forming the western arm of Cumberland Bay, South Georgia. It is entered southward of Larsen Point, where it is 2.5 miles (4 km) wide, and extends 7 miles (11 km) in a southwest direction. This feature was surveyed by the Swedish Antarctic Expedition, 1901–04, who named it "West Bay". It was remapped during 1926–29 by Discovery Investigations personnel and renamed "West Cumberland Bay". The shortened form West 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 West Bay and that all other names be rejected.