Gabo Island is a 154-hectare (380-acre) island located off the coast of eastern Victoria, Australia, between Mallacoota and Cape Howe on the border with New South Wales. It is separated from the mainland by a 500-metre-wide channel; access is available by arranged flights and boats. Gabo Island is a shipping reference commonly referred to in Victorian weather warnings issued by the Australian Bureau of Meteorology. The island is an unincorporated area under the direct administration of the government of Victoria.