In the coastal waters off Krabi, lie more than 200 islands, some of them inhabited, and many that belong to Hat Noppharat Thara-Ko Phi Phi National Park. These islands offer a host of recreational opportunities including reef diving and world-class rock climbing, and harbor some of the most exotic, private beaches.  

Comprising of two main islands, Phi Phi Don and Phi Phi Ley, these islands are a part of the Hat Noppharat Thara-Ko Phi Phi National Park.

 Phi Phi Don Island One of southern Thailand's most popular tourist destinations, features sheer limestone cliffs and sandy beaches. Anvil in shape, the island covers a total area of 28sq km in length and 3.5km at its broadest point. The neck or handle of the island is where the majority of the tourist accommodation and services are located, and is the central point for boats to dock. An uninhabited section of the island lies to the west, and Cape Laem Tohng, on the northern tip, is home to the Chao Ley, or Sea Gypsys. Diving at Laem Tohng is excellent, as it is also at Hua Rah Ket to the extreme south.

 Phi Phi Ley Island Eentirely comprised of steep cliffs, with caves and a sea lake. It features several beautiful bays ideal for snorkeling, and on the northeast side, the famous Viking Cave, which contains pre-historic paintings. The island is also a popular site for nesting swifts, and local people come there daily to collect the nests used to make Bird's Nest Soup, a Chinese delicacy.
To the north of Phi Phi Don lies Koh Yoong Island featuring 2 small beaches and well preseved coral gardens off shore.
Adjacent to Koh Yoong lies Koh Pai Island with small swimming beaches on the north and east side, and coral gardens off the south end.

About 53 islands are included in this group, which form the southern most district of Krabi Province.

Koh Lanta Yai
The largest of the islands,it was known long ago by its name in the Malay language, Pulao Satak, which means Long Beach Island. The island is a favourite spot for those who seek peace and solitude, and is the home of the District and National Park offices. Mountainous and rugged in some spots, especially near the southern tip; with a combination of gravelly and fine white sandy beaches, the island is also home to a clan of Chao Ley, or Sea Gypsies who preserve many of their ancient customs and ceremonies. Some accomodation and services are available, and the island is easily accessed by ferry from Ban Hua Hin Pier in Tambon Koh Khlang; Bor Muang Pier in Tambon Sai Kao; or Jao Fah Pier in Krabi Town.

Koh Taleng Beng
Lies in the Lanta district and similar in shape to Phi Phi Ley. Swallows also nest at this island which at low tide features a small beach and tunnel.

Mu Koh Hah
Still in the Lanta area, this is a group of 5 islands featuring coral gardens and good diving spots. 

Koh Ngai, Koh Rock Nai and Koh Rock Nok
South of Lanta Island, these 3 islands are close to Trang Province. Koh Ngai is easily accessed via ferry from Pak Meng Beach, others are accessed by hired boat and feature both beaches and coral gardens.