South Avalon-Burin oceanic barrens is a taiga ecoregion located within the Canadian province of Newfoundland and Labrador and the French overseas collectivity of Saint Pierre and Miquelon.

It is defined by the World Wildlife Fund (WWF) categorization system as inhabiting the southern headlands of the Avalon and Burin Peninsulas along the southeastern coast of Newfoundland.

[2] This ecoregion features a predominantly subarctic climate (Köppen Dfc) with cold winters and cool, foggy summers.

The area around Mistaken Point features a milder subpolar oceanic climate (Köppen Cfc) with relatively mild winters and cool summers.

[2] The moss-heath plant associations of this ecoregion, dominated by blanket bogs and Racomitrium heath, are unique in North America.