Guadeloupe is an archipelago and overseas department and region of France in the Caribbean. It consists of six inhabited islands—Basse-Terre, Grande-Terre, Marie-Galante, La Désirade, and the two inhabited Îles des Saintes—as well as many uninhabited islands and outcroppings. It is south of Antigua and Barbuda and Montserrat, and north of Dominica. The region's capital city is Basse-Terre, located on the southern west coast of Basse-Terre Island; however, the most populous city is Les Abymes and the main center of business is neighbouring Pointe-à-Pitre, both located on Grande-Terre Island.

Like the other overseas departments, it is an integral part of France. As a constituent territory of the European Union and the Eurozone, the euro is its official currency and any European Union citizen is free to settle and work there indefinitely. As an overseas department, however, it is not part of the Schengen Area. The region formerly included Saint Barthélemy and Saint Martin, which were detached from Guadeloupe in 2007 following a 2003 referendum.

Navigator Christopher Columbus was the first European to see Guadeloupe, where he landed in 1493, and gave the island its name. The official language is French; Antillean Creole is also spoken.

Guadeloupe is an archipelago of more than 12 islands, as well as islets and rocks situated where the northeastern Caribbean Sea meets the western Atlantic Ocean. It is located in the Leeward Islands in the northern part of the Lesser Antilles, a partly volcanic island arc. To the north lie Antigua and Barbuda and the British Overseas Territory of Montserrat, with Dominica lying to the south.

The two main islands are Basse-Terre (west) and Grande-Terre (east), which form a butterfly shape as viewed from above, the two 'wings' of which are separated by the Grand Cul-de-Sac Marin, Rivière Salée and Petit Cul-de-Sac Marin. More than half of Guadeloupe's land surface consists of the 847.8 km2 Basse-Terre. The island is mountainous, containing such peaks as Mount Sans Toucher (4,442 feet; 1,354 metres) and Grande Découverte (4,143 feet; 1,263 metres), culminating in the active volcano La Grande Soufrière, the highest mountain peak in the Lesser Antilles with an elevation of 1,467 metres (4,813 ft). In contrast Grande-Terre is mostly flat, with rocky coasts to the north, irregular hills at the centre, mangrove at the southwest, and white sand beaches sheltered by coral reefs along the southern shore. This is where the main tourist resorts are found.

Marie-Galante is the third-largest island, followed by La Désirade, a north-east slanted limestone plateau, the highest point of which is 275 metres (902 ft). To the south lies the Îles de Petite-Terre, which are two islands (Terre de Haut and Terre de Bas) totalling 2 km2.

Les Saintes is an archipelago of eight islands of which two, Terre-de-Bas and Terre-de-Haut are inhabited. The landscape is similar to that of Basse-Terre, with volcanic hills and irregular shoreline with deep bays.

There are numerous other smaller islands, most notably Tête à l'Anglais, Îlet à Kahouanne, Îlet à Fajou, Îlet Macou, Îlet aux Foux, Îlets de Carénage, La Biche, Îlet Crabière, Îlets à Goyaves, Îlet à Cochons, Îlet à Boissard, Îlet à Chasse and Îlet du Gosier.