Tliltocatl sabulosus (synonym Brachypelma sabulosum) is a species of spider in the family Theraphosidae (tarantulas), found in Guatemala.
Tliltocatl sabulosus is a large tarantula, females having a total body length of around 65–70 mm. The fourth leg is the longest at around 75 mm. It is generally black in colour, with scattered red hairs on the abdomen.
Tliltocatl sabulosus was first described, as Eurypelma sabulosum, by F. O. Pickard-Cambridge in 1897. It was transferred to the genus Brachypelma in 1989. In 2019, it was proposed that it be moved to the new genus Tliltocatl; this has been accepted by the World Spider Catalog.
Tliltocatl sabulosus was originally collected around Tikal in northern Guatemala.
All species of Brachypelma, then including Tliltocatl, including T. sabulosus, were placed on CITES Appendix II in 1994, thus restricting trade.