单带龙舌兰（学名：Agave univittata）为龙舌兰科龙舌兰属下的一个种。

Agave univittata, the "Thorn-crested Century Plant" is a plant species native coastal areas southern Texas and northeastern Mexico, at elevations less than 100 m (300 feet). It is often mistakenly called Agave lophantha, but the name A. univittata is older and therefore more in accord with nomenclatural rules of botany.