Wallis (Wallisian: ʻUvea) is a Polynesian island in the Pacific Ocean belonging to the French overseas collectivity (collectivité d'outre-mer, or COM) of Wallis and Futuna. It lies north of Tonga, northeast of Fiji, east-northeast of the Hoorn islands, east of Fiji's Rotuma, southeast of Tuvalu, southwest of Tokelau and west of Samoa. Its area is almost 100 km² with almost 11,000 people. Its capital is Matāʻutu. Roman Catholicism is the predominant religion. Its highest point is Mount Lulu Fakahega (131 m). Wallis is of volcanic origin with fertile soil and some remaining lakes. Rainfall is plentiful.

The island has an area of 77,5 km² and a circumference of c. 50 km. Its highest point is Mount Lulu Fakahega (131 m). There are also a handful of large lakes such as Lake Lalolalo, a sign of the island's volcanic origin, some of them almost perfect circles and with straight vertical walls, like Lalolalo, Lanu'tavake.

Uvea is located 240 km northeast of Futuna and Alofi islands which form the Hoorn archipelago. Together with some 15 smaller islands surrounding it, on its huge barrier reef, it forms the Wallis archipelago. Wallis has a fertile volcanic soil and sufficient rainfall to allow subsistence farming.

Uvea is subdivided into three districts (north to south):

^A Formerly called "Mua".

Sub-equatorial oceanic trade wind, hot and humid . The average temperature is around 26 °C (79 °F) all year round and there is almost never drops below 24 °C (75 °F), and in the rainy season is held in the mark 28–32 °C (82–90 °F).

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