Agave univittata, the thorn-crested century plant or thorn-crested agave,[3] is a plant species native to coastal areas of southern Texas and northeastern Mexico, at elevations less than 100 m (300 feet).

It has been widely named Agave lophantha[3] by botanists including Howard Scott Gentry,[4] but the name A. univittata is older and therefore more in accord with nomenclatural rules of botany.

[5][page needed] Agave univittata has thick, fleshy leaves that are stiff and undulate (wavy) along the margins.

[3][4] It is cultivated as an ornamental plant, and in the UK the cultivar 'Quadricolor' has won the Royal Horticultural Society's Award of Garden Merit.

[6][7] Because the species is widespread and the overall population is stable, it is not considered by the IUCN to be threatened.