| Cyclacanthus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Acanthaceae |
| Subfamily: | Acanthoideae |
| Tribe: | Justicieae |
| Genus: | Cyclacanthus S.Moore (1921) |
| Type species | |
| Cyclacanthus coccineus | |
Cyclacanthus is a genus of flowering plants in the family Acanthaceae and tribe Justicieae. The genus consists of two species endemic to Indochina, described by Spencer Le Marchant Moore in 1921.