Pilosella ilgazensis Vladimirov, Coskuncelebi & Kit Tan, a new diploid (2n = 2x = 18) species from Ilgaz Mountain National Park, North Anatolia, Turkey, is described and illustrated. It grows in subalpine grassland and open Juniperus sibirica Burgsd. communities. Pilosella ilgazensis is morphologically intermediate between P. alpicola s.l., from the high mountains of Central and Southeast Europe, and the Euro-Asiatic Pilosella echioides s.l. The relationship of the species with other similar taxa is discussed. The name Hieracium leontocephalum Halacsy, from a morphologically similar taxon from the Balkan Peninsula, is lectotypified, and a new generic combination, Pilosella leontocephala (Halacsy) Vladimirov, Coskuncelebi & Kit Tan is presented.