Cymbidium dayanum var. dayanum is a species in the Cymbidium genus. This name is accepted name for the species in the family Orchidaceae subfamily Epidendroideae, tribe Cymbidieae, subtribe Cymbidiinae, . This species is found in Assam, Borneo, Cambodia, China South-Central, China Southeast, East Himalaya, Hainan, Japan, Laos, Malaya, Maluku, Myanmar, Philippines, Sulawesi, Sumatera, Taiwan, Thailand, Vietnam.