Yowie Bay is a suburb in southern Sydney, in the state of New South Wales, Australia.

Yowie Bay is located 24 kilometres south of the Sydney central business district, in the local government area of the Sutherland Shire.

In an 1890 newspaper letter to the editor,[2] Richard Hill claimed the meaning of Yowie was "Cooee".

Referring to Yowie Point, he claimed that there "the blacks, when travelling north, used to cooey to their friends on the north, and were brought over in the canoes..." The word "yowi" also appeared as "echo of a cooee" on a list of Aboriginal words collected in 1899 by the Anthropological Society of Australasia, in the Liverpool (police) district, which had earlier included the current Sutherland Shire area.

As reported by local newspapers,[3][4] the Sutherland Shire Council attempted to establish Ewey Bay as the correct name.