Beaucarnea sanctomariana is a tree in the family Asparagaceae, native to Mexico.

The species is named for the town of Santa María Chimalapa in Oaxaca.

[3] Beaucarnea sanctomariana is endemic to Mexico, where it is confined to the Chimalapas region of the Isthmus of Tehuantepec in Oaxaca.

Its habitat is on slopes facing the Gulf of Mexico, at altitudes of 200–700 m (700–2,300 ft).

[1] Beaucarnea sanctomariana has been assessed as endangered on the IUCN Red List.