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Tapuaetai (tapuae: footprint; ta'i: one), or "One Foot Island", is one of 22 islands in the Aitutaki atoll of the Cook Islands. It is located on the southeastern perimeter of Aitutaki Lagoon immediately to the southwest of the larger island of Tekopua, seven kilometres to the east of the main island of Aitutaki. The island is 570m long and up to 210m wide, with an average elevation of 1.5m above sea level.
One Foot Island was awarded "Australasia's Leading Beach" at the World Travel Awards held in Sydney in June 2008.
- Wheeler, T.; Keller, N. (1994), Rarotonga and the Cook Islands: A travel survival kit (3 ed.), Hawthorn, Australia: Lonely Planet
- D. R. Stoddart (13 August 1975). "Reef Islands of Aitutaki". In D.R. Stoddard and P.E. Gibbs (ed.). Atoll Research Bulletin No 190, Almost-Atoll of Aitutaki, Reef Studies in the Cook Islands, South Pacific (PDF). Smithsonian Institution. p. 68. Retrieved 4 August 2020.
- "Australasia's Leading Beach 2008". World Travel Awards. Retrieved 4 August 2020.