Located between the large island of Phuket and the western Andaman Sea coast of the mainland, Phi Phi Islands are administratively part of Krabi province and about 40km offshore from Krabi, with two scenic limestone islands of Ko Phi Phi Don, the largest and the most populated island of the group, and Ko Phi Phi Leh. Ko Phi Phi Don has the entire tourist infrastructure, including resorts, restaurants, bars, tour agencies and dive schools, while Ko Phi Phi Leh, the second largest one, is hemmed in by towering limestone cliffs, and visited by many people as well.

The rest of the islands in the group, including Bida Nok, Bida Noi, and Bamboo Island (Ko Mai Phai), are not much more than large limestone rocks jutting out of the sea.