Puka-Puka is a small inhabited coral atoll in the north-eastern Tuamotu Archipelago, sometimes included as a member of the Disappointment Islands.

Puka-Puka was the first of the Tuamotus sighted by the Spanish expedition of Ferdinand Magellan on 21 January 1521, and charted as San Pablo because it was discovered on the day on which Paul of Tarsus is traditionally said to have become a Christian.

[3] Dutch explorers Jacob le Maire and Willem Schouten arrived at Puka-Puka on April 10, 1616, during their Pacific journey.

On 30 July 1947, Thor Heyerdahl and his six-man expedition aboard the raft Kon Tiki made their first sighting of land since departing Callao, Peru when they passed by Puka-Puka.

Puka-Puka is the name of the administrative commune in which it lies, of which it is the sole atoll.