Perrottetia hongthinhae is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Streptaxidae.

The specific name hongthinhae is in honour of Nguyen Thi Hong Thinh, the wife of the malacologist Do Duc Sang.

[1] The holotype is deposited in Vietnam National Museum of Nature in Hanoi (Bảo tàng thiên nhiên Việt Nam).

Paratypes are deposited in Museum of Biology of Hanoi National University of Education, Vietnam.

[1] Distribution of Perrottetia hongthinhae include the type locality only.

[1] Perrottetia hongthinhae differs from Perrottetia dugasti in having a single parietal lamella, a strong higher basal lamella, and a rectangular aperture with rounded angles.