Ewartiothamnus is a genus of flowering plants in the family Asteraceae native to New Zealand. It contains a single species, Ewartiothamnus sinclairii.
| Ewartiothamnus | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Gnaphalieae |
| Genus: | Ewartiothamnus Anderb. |
| Species: | E. sinclairii
|
| Binomial name | |
| Ewartiothamnus sinclairii (Hook.f.) Anderb.
| |