Galium shinasii Yildirim (Rubiaceae), is described as a new species from Malatya Province in eastern Anatolia, Turkey. The new species is morphologically related to Galium cornigerum Boiss. & Hausskn. G. lasiocarpum and G. sorgereae Ehrend. and Schnb. but clearly differs from them based on the morphological differences presented in the species description. In addition, the conservation status, the distribution map, and notes on the biogeography and ecology of the new species are given.