Tropidophis xanthogaster, also known commonly as the Guanahacabibes dwarf boa and the Guanahacabibes trope, is a species of snake in the family Tropidophiidae (dwarf boas).

The species is endemic to the Guanahacabibes Peninsula, in the province of Pinar del Río, western Cuba.

[2] The preferred natural habitat of T. xanthogaster is a forest with shaded rocky areas and caves, at elevations up to 25 m (82 ft).

[1] Dorsally, T. xanthogaster is grayish-brown with eight rows of dark brown spots.

It may attain a snout-to-vent length (SVL) of about 24 cm (9.4 in).