The Comunidade Intermunicipal do Baixo Alentejo (Portuguese pronunciation: [ˈbai̯ʃu ɐlẽˈtɛʒu]; English: Lower Alentejo) is an administrative division in Portugal.

[2] The seat of the intermunicipal community is Beja.

Baixo Alentejo comprises 13 of the 14 municipalities of the Beja District.

[4] It is bordered on the North by Alentejo Central Subregion, on the East by Spain, on the South by the Algarve and on the West by Alentejo Litoral.

It covers the Eastern part of the former Baixo Alentejo Province.