Saint Lucia is an island country of the West Indies in the eastern Caribbean. The island was previously called Iouanalao and later Hewanorra, names given by the native Arawaks and Caribs (respectively), two Amerindian peoples. Part of the Windward Islands of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent, northwest of Barbados and south of Martinique. It covers a land area of 617 km2 with an estimated population of over 180,000 people as of 2018. The nation's capital and largest city is Castries.

The Lesser Antilles are a group of islands in the Caribbean Sea. They are distinguished from the large islands of the Greater Antilles to the west. They form an arc which begins east of Puerto Rico and swings south through the Leeward and Windward Islands almost to South America and then turns west along the Venezuelan coast as far as Aruba. Barbados is isolated about 100 miles east of the Windwards.