Llívia is a town in the comarca of Cerdanya, province of Girona, Catalonia, Spain. It is a Spanish exclave surrounded by the French département of Pyrénées-Orientales. In 2023, the municipality of Llívia had a total population of 1,511. It is separated from the rest of Spain by a corridor about 1.6 km wide, which includes the French communes of Ur and Bourg-Madame. The Segre river, a tributary of the Spanish Ebro, flows through Llívia.

An enclave is a territory that is entirely surrounded by the territory of only one other state or entity. Such territory can be a small territory as part of a larger one. Enclaves may also exist within territorial waters. Enclave is sometimes used improperly to denote a territory that is only partly surrounded by another state. Many enclaves are also exclaves, but some are not, for example Vatican City and San Marino and Lesotho are completely enclaved sovereign states.