Dyakia is a genus of orchids. It contains only one species, Dyakia hendersoniana <small>(Rchb.f.) Onyx,</small> endemic to the Island of Borneo.
This species is a small to intermediate sized epiphyte.
Up to four erect inflorescences are produced axillary. They bear up to 30-40 flowers per inflorescence.
The generic name Dyakia is derived from the Dayak people.
This species is rarely cultivated.