Cuthonella berghi is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Cuthonellidae.

[2] This species was described from a single specimen collected at 550 m depth in the Denmark Strait at 66°42′N 26°40′W / 66.700°N 26.667°W / 66.700; -26.667.