Desmanthus is a genus of flowering plants in the subfamily Mimosoideae of the pea family, Fabaceae. The name is derived from the Greek words δεσμός (desmos), meaning "bundle", and ἄνθος (anthos), meaning "flower". It contains about 24 species of herbs and shrubs that are sometimes described as being suffruiticose and have bipinnate leaves. Desmanthus is closely related to Leucaena and in appearance is similar to Neptunia.