Antigua and Barbuda is an island nation located in the eastern Caribbean Sea, on the sea's boundary with the Atlantic Ocean. There are two major islands - Antigua ( ) and Barbuda (/bɑrˈbjuːdə/), which are close neighbors within the middle of the Leeward Islands, roughly 17 degrees north of the equator.

The islands of Antigua and Barbuda are part of the Lesser Antilles archipelago. To the south of Antigua and Barbuda lie the islands of Guadeloupe, Dominica, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Barbados, Grenada and Trinidad and Tobago. Montserrat lies to the southwest; Saint Kitts and Nevis and Saint Eustatius are to the west, and Saint Barthélemy, Saint Martin and Anguilla are to the northwest.