Tupaia (c.1725 - December, 1770) was a Polynesian navigator and arioi (or "priest"), originally from the island of Ra'iatea in the Pacific Islands group known to Europeans as the Society Islands. His remarkable navigational skills and Pacific geographical knowledge were to be utilised by Lt. James Cook, R.N. when he took him aboard HM Bark Endeavour as guide on its famous voyage of exploration.

type genus of the Tupaia: chief genus of tree shrews