Tuvalu (IPA: [t:u:'valu]), formerly known as the Ellice Islands, is a Polynesian island nation located in the Pacific Ocean midway between Hawaii and Australia. Its nearest neighbours are Kiribati, Samoa and Fiji. Comprising four reef islands and five true atolls with a gross land area of just 26 square kilometers (10 sq mi) it is the third-least populated independent country in the world, with only Vatican City and Nauru having fewer inhabitants. It is also the second-smallest member by population of the United Nations. In terms of physical land size, Tuvalu is the fourth smallest country in the world, larger only than the Vatican City—0.44 km²; Monaco—1.95 km² and Nauru—21 km².

The first inhabitants of Tuvalu were Polynesian people. The islands came under Britain's sphere of influence in the late 19th century. The Ellice Islands were administered by Britain as part of a protectorate from 1892 to 1916 and as part of the Gilbert and Ellice Islands Colony from 1916 to 1974. In 1974 the Ellice Islanders voted for separate British dependency status as Tuvalu, separating from the Gilbert Islands which became Kiribati upon independence. Tuvalu became fully independent within The Commonwealth in 1978.