Castanospora

taxobox
name = Castanspora
regnum = Plantae
unranked_divisio = Angiosperms
unranked_classis = Eudicots
unranked_ordo = Rosids
ordo = Sapindales
familia = Sapindaceae
genus = "Castanospora"
genus_authority = F. Muell
binomial = "Castanospora alphandii"
binomial_authority = (F.Muell.) F.Muell.
subdivision_ranks = Species|

"Castanospora" is a monotypic genus of tree in the soapberry family Sapindaceae. It is native to the rainforests of southeatern Queensland and northern New South Wales in Australia.

It is known to horticulture as the brown tamarind, though it is only distantly related to the true tamarind.