An ariki (New Zealand, Cook Islands), ‘ariki (Easter Island), aliki (Tokelau, Tuvalu), ali‘i (Samoa, Hawai‘i), ari'i (Society Islands, Tahiti), aiki or hakaiki (Marquesas Islands), akariki (Gambier Islands) or ‘eiki (Tonga) is or was a member of a hereditary chiefly or noble rank in Polynesia.