Due to an important number of salvage projects and rescue excavations in Northern Syria, Southern Turkey and Northern Iraq, the archaeo­logical records documenting Upper Mesopotamia drastically increased during these last decades. More than 300 regular or rescue preclassical excavations have been registered in Upper Mesopotamia so far. The Arlas of Preclassical Upper Mesopotamia is the result of a systematic examination of the published evidence. More than 100 collaborators have contributed to set up an analytical repertory, summing up the available data through a standardized file. This repertory enumerates each site and reports topography, dimensions of the settlement, geographical location, data on the excavations, periods of occupation, environmental and archaeometrical stuclies, material culture (72 entries). 14C samplings and bibliography. Ail these ancient settlements are carefully locatecl in new 4-colour maps. Subartu XIII includes an interactive CD-ROM that allows multiple queries and comprises an upclated bibliography on Upper Mesopotamia, to be consiclered as the Supplement to Subartu I.