Falsilunatia patagonica is a species of predatory sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.

[1] This marine species occurs off the Falklands, Argentina, Tierra del Fuego, the Strait of Magellan, Chile and South Georgia .

The size of an adult shell varies between 12 mm and 30 mm.

[2] Minimum recorded depth is 18 m.[2] Maximum recorded depth is 1886 m.[2]

This Naticidae-related article is a stub.