Papau is one of 22 islands in the Aitutaki atoll of the Cook Islands. It is located on the eastern perimeter of Aitutaki Lagoon, four kilometres to the east of the main island of Aitutaki. The island is 400m long and 200m wide.
- 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. 63-64. Archived from the original (PDF) on 2009-09-18. Retrieved 4 August 2020.