Penstemon humilis is a species of flowering plant in the veronica family known by the common names low penstemon and lowly penstemon. It is native to the western United States.
This species of penstemon is found in sagebrush, in pinyon-juniper woodland habitat, and in mountain forests and tundra.
Low penstemon is a short species that usually grows a mat of basal leaves from a woody, branching caudex. Its flowering stems are variable and may grow along the ground or grow straight upwards, typically reaching lengths of , but occasionally as short as or as long as .
The flowers are narrowly tubular.
Penstemon humilis was scientifically described and named by Asa Gray in 1862, giving credit to Thomas Nuttall. It is part of the genus Penstemon which is classified in the Plantaginaceae family. It has three accepted varieties.
Penstemon humilis has twelve synonyms of the species or one of its three varieties.
The species name, humilis, means 'low-growing' in Botanical Latin. Similarly it is known by the common names low penstemon, lowly penstemon, or low beardtongue.