Ba is a province of Fiji, occupying the north-western sector of Viti Levu, Fiji's largest island. It is one of fourteen provinces in the nation of Fiji, and one of eight based in Viti Levu. It is Fiji's most populous province, with a population of 247,708 – more than a quarter of the nation's total – at the 2017 census. It covers a land area of 2,634 km2 (1,017 sq mi), the largest of any province.