Crantzia is a plant genus in the family Gesneriaceae. Crantzia species grow in damp or wet forests, mostly on Caribbean islands. Some are epiphytes, others are subshrubs or herbaceous plants with fibrous roots.[1]
Several taxa from the Gesneriaceae genus Alloplectus have been reclassified as Crantzia.
Giovanni Antonio Scopoli named the genus after botanist and physician Heinrich Johann Nepomuk von Crantz (1722–1799).