Allium euphraticum Balos, Sonay & U. Çakılcıoğlu (Amaryllidaceae) is described as a new species in sect. Codonoprasum from Elazığ Province, eastern Turkey. It is morphologically similar to A. sultaniae-ferhanii and A. turcicum, but differs from them by, for example, scabrid leaf sheath, backwards curved apex of perigon, creamy and brownish perigon, and presence of teeth at the filament base. Herein, we present a detailed description of the species, along with images, an overview of its habitat and ecological characteristics, and a conservation assessment.