Euphorbia antiquorum is a species in the Euphorbia genus. This name is accepted name for the species in the family Euphorbiaceae subfamily Euphorbioideae, tribe Euphorbieae, subtribe Euphorbiinae, . This species is found in Andaman Is., Assam, Bangladesh, Cambodia, East Himalaya, India, Jawa, Malaya, Myanmar, Nicobar Is., Pakistan, Sri Lanka, Thailand, Vietnam.