Cuba (European Portuguese pronunciation: [ˈkuβɐ] ⓘ) is a town and municipality in the District of Beja in Portugal.

The name "Cuba" is likely of Arabic origin, pertaining to the qubba, that is cupola or domed tombs of ascetic spiritual leaders.

Such toponyms are frequent in Southern Portugal and likely related to the Sufi movements that flourished during the period of Almoravid decay, such as the one led by Ibn Qasi.

[3] In the 20th century, a small number of scholars sought to ascribe Portuguese origins to Christopher Columbus.

One of these attempts had him born in the town of Cuba, after which he would have named the Caribbean island (see possible birthplace of Christopher Columbus).