Phaius tancarvilleae is a species of orchid widespread in the Indian Subcontinent, New Guinea, China, Japan, Southeast Asia, Indonesia, Malaysia, the Philippines, Australia and certain islands of the Pacific. It is also naturalised in Hawaii, Panama, the West Indies and the US State of Florida In Australia it is found as far south as Yamba, New South Wales and further north in tropical Queensland. It is listed as endangered with possible extinction within the country. Common names include greater swamp-orchid, swamp lily, swamp orchid, nun's-hood orchid, nun's orchid and veiled orchid.