五月一日湾是南极洲的海湾，位于南设得兰群岛的迪塞普逊岛，处于福斯特港西南部，以阿根廷探险队的探险船命名，现时由南极条约体系管理。

• SCAR Composite Antarctic Gazetteer.

Primero de Mayo Bay is a bay on the southwest side of Port Foster, Deception Island, in the South Shetland Islands. Named "Bahia 1 de Mayo" or "Bahia Primero de Mayo" by the Argentine Antarctic Expedition, 1942–43, after the 1 de Mayo, an expedition ship which visited Deception Island in 1942 and 1943; she sank off the coast of Argentina on February 5, 1944.