Phillip Island is an Australian island about 125 km south-southeast of Melbourne, Victoria. The island is named after Governor Arthur Phillip, the first Governor of New South Wales, by explorer and seaman George Bass, who sailed in an open whale boat, arriving from Sydney on 5 January 1798.
Phillip Island forms a natural breakwater for the shallow waters of the Western Port. It is 26 km long and 9 km wide, with an area of about 100 km². It has 97 km of coastline and is part of the Bass Coast Shire.
A 640 m concrete bridge connects the mainland town San Remo with the island town Newhaven. In the 2016 census, the island's permanent population was 10,387, compared to 7,071 in 2001. During the summer, the population swells to 40,000. 60% of the island is farmland devoted to grazing of sheep and cattle.