The Jewish presence in Alcoutim during the Middle Ages must be understood within the broader framework of the settlement of eastern Algarve after the definitive Christian conquest of the territory, completed in the mid-13th century. As a border town and a point of fluvial control on the Lower Guadiana, Alcoutim played a strategic role in royal administration, in the circulation of people and goods, and in the regulation of relations with Castilian territory. Within this context, the Jewish presence appears as structural and functional rather than incidental.

The existence of a Jewish quarter in Alcoutim is attested by fiscal and administrative documentation, namely references to rents and taxes associated with the local Jewish community. In medieval Portugal, the explicit mention of a “judiaria” does not correspond to a generic or symbolic designation, but to a precise legal reality: a group of Jewish residents officially recognized by the authorities, subject to specific taxation and integrated into the economic system of the kingdom. These documentary references therefore confirm the institutional existence of an organized Jewish community in Alcoutim, albeit of small size.

From an urban perspective, the exact location of the Jewish quarter remains unknown. In small towns such as Alcoutim, Jewish quarters did not necessarily take on an extensive or formally defined layout and could correspond to a limited group of houses located near circulation routes, areas of economic activity, or zones under closer administrative control. The absence of identified material remains to date does not invalidate its existence, but rather reflects later urban transformations and the fragility of local documentary preservation.

The importance of Alcoutim as a frontier contact zone becomes particularly significant at the end of the 15th century. Following the expulsion of the Jews from Castile in 1492, eastern Algarve became one of the entry routes into Portugal for Jewish populations coming from Castilian territory. Historical sources refer to the presence of Castilian Jews who entered through this region and were baptized in Alcoutim, a fact that indicates not only human circulation but also the prior existence of administrative and social mechanisms capable of managing this population.

The Jewish quarter of Alcoutim thus represents a case of Jewish presence documented primarily through administrative and fiscal records, typical of peripheral and frontier towns. It is a case in which historical existence is confirmed by academic research, even though its urban and archaeological materiality has yet to be identified, leaving room for future investigation, both in archival research and in the study of the built environment and historical topography of the town.