Aruba ( /əˈruːbə/ ə-ROO-bə, Dutch pronunciation: [aˈruba]) is a 33 km-long island of the Lesser Antilles in the southern Caribbean Sea, located 27 km north of the coast of Venezuela and 130 km (approx.) east of Guajira Peninsula (Colombia). Together with Bonaire and Curaçao, it forms a group referred to as the ABC islands of the Leeward Antilles, the southern island chain of the Lesser Antilles.

Aruba is one of the four constituent countries that form the Kingdom of the Netherlands, together with the Netherlands, Curaçao, and Sint Maarten whose citizens share a single nationality: Dutch citizen. Aruba has no administrative subdivisions, but for census purposes is divided into 8 regions. Its capital is Oranjestad. Unlike much of the Caribbean region, Aruba has a dry climate and an arid, cactus-strewn landscape. This climate has helped tourism as visitors to the island can reliably expect warm, sunny weather. It has a land area of 179 square kilometres (69 sq mi) and is densely populated with a total of 101,484 inhabitants at the 2010 Census. It lies outside the hurricane belt. It is also home to the endemic Aruba Island Rattlesnake.