Hymenaea allendis is an extinct legume species in the family Fabaceae described from a single isolated fossil flower in amber.

[3] The fossil was examined by paleobotanists Laura Calvillo-Canadell and Sergio Cevallos-Ferriz of the National Autonomous University of Mexico and Lourdes Rico-Arce of the Royal Botanic Gardens Kew, United Kingdom; Calvillo-Canadell, Cevallos-Ferriz and Rico-Arce's description of the species was published in a 2010 article in the Review of Palaeobotany and Palynology.

The etymology of the chosen specific name allendis is in reference to the town Simojovel de Allende which is located within the amber mining area.

Both H. protera, found in Dominican amber, and H. mexicana are placed closer to the single living old-world species, H. verrucosum, which is placed in the Hymenaea sect.

Preserved stamens which were dislodged from the flower during entombment in the resin show two rows of bilocular anthers on their upper surfaces.