Dendrosicyos is a monotypic genus in the plant family Cucurbitaceae.
The only species is Dendrosicyos socotranus, the cucumber tree.
The species is endemic to the island of Socotra in Yemen, and is the only species in the Cucurbitaceae to grow in a tree form
. The species name was originally spelled D. socotrana, but this is corrected to masculine grammatical gender according to the International Code of Nomenclature for algae, fungi, and plants.