Subdivisions of Alentejo contains the various administrative entities which have been historically referred to as "Alentejo".
Alto Alentejo Province (1936–1976) Baixo Alentejo Province (1936–1976) Alentejo Region (NUTS 2 region) Alto Alentejo Subregion (NUTS 3 region), in Alentejo - Portalegre District + some municipalities Baixo Alentejo Subregion (NUTS 3 region), in Alentejo Alentejo Litoral Subregion (NUTS 3 region), in Alentejo Alentejo Central Subregion (NUTS 3 region), in Alentejo Lezíria do Tejo Subregion (NUTS 3 region), in Ribatejo