Eysenhardtia orthocarpa is a species of small flowering tree, (a kidneywood) in the legume family, Fabaceae. Its range is at the northern region of the Sierra Madre Occidental cordillera of eastern Sonora; it is also in central Sonora, with the species ranging into southeast Arizona and the extreme southwest, bootheel region of New Mexico, the entire sky island region at the northern cordillera called Madrean Sky Islands.