马里安湾是南极洲的海湾，位于南设得兰群岛的乔治王岛西南部，处于科林斯湾和波特湾之间，该海湾在1921年由苏格兰地质学家命名。

Marian Cove (62°13′S 58°48′W / 62.217°S 58.800°W / -62.217; -58.800) is a cove indenting the southwest part of King George Island between Collins Harbour and Potter Cove, in the South Shetland Islands, Antarctica. The name was used by Scottish geologist David Ferguson in a 1921 report based upon his investigations of King George Island in 1913–14, but may reflect an earlier naming.