Cashaw is a vernacular name for several plants. The term is derived from the colloquial English dialects, in particular Jamaican patois. It can refer to:
Certain algarrobo, bayahonda and mesquite trees (Prosopis species) in the Fabaceae Anacardium occidentale, or cashew, in the Anacardiaceae Acacia farnesiana, or needle bush, in the Fabaceae Cucurbita argyrosperma, or cushaw, in the Cucurbitaceae