Hieracium snowdoniense, the Snowdonia hawkweed, is a species of flowering plant within the family Asteraceae.

[2] In 2002, three plants of the species were re-discovered on steep slopes in the Cwm Idwal National Nature Reserve above Bethesda.

[2] In 2021 it appeared that the population had doubled to six plants, but they were in an extremely inaccessible place, making it impossible to confirm that all six were in fact Hieracium snowdoniense.

Seeds of the species were also collected, and captive specimens are being cultivated at the National Botanic Garden of Wales.

[2] Hieracium snowdoniense is a perennial species,[2] which possesses a rosette of leaves at the base of the plant.