Coral and Raya Islands Off Phuket's southern coast lie a number of small islands whose pristine shores lure scuba divers and beach bums away from the mainland. Most of these isolated islands are undeveloped, but the notable exceptions are Coral Island and Ko Raya (also known as Ko Racha) which have accommodation options and restaurants. Both islands have safe swimming, reefs teeming with aquatic life, and a sense of getting away from it all that's harder and harder to come by in Phuket proper. Coral Island is read more about Coral and Raya Islands

Ko Adang Far out in the Andaman Sea, the formidable mountains of Ko Adang rise over Ko Lipe like a protective uncle. The two islands are so close together that if arriving to Lipe at Pattaya Beach, you may very well assume that Adang's lushly forested southern eminence is part of Lipe's interior. In fact, the two neighbours could hardly be more different. While both islands are technically part of Tarutao National Park, development and mass tourism have taken a firm hold on Lipe. In contrast, Adang read more about Ko Adang

Ko Bulon Lae Kicking a football in the sea breeze, school kids laugh on their beachside field. Local sea gypsies smile at backpackers and families who lounge outside their simple bungalows. Flowers and butterflies abound. Away from the over-development and other problems found on more popular Thai islands, Ko Bulon Lae quietly preserves its rural tranquility. If that sounds wonderful, well, it truly is. But it takes a special sort of person to appreciate this one-of-a-kind island in the Andaman Sea. read more about Ko Bulon Lae

Ko Chang Sometimes called the Beast of the East thanks to its sheer mass and location in the eastern Gulf of Thailand near Cambodia, Ko Chang might just be the quintessential Thai island destination. From breathtaking mountains to idyllic beaches, hippy hangouts to salubrious resorts, and traditional fishing villages to neon nightlife, Elephant Island truly has something for everyone. Some say that Ko Chang's name derives from its shape on a map that somewhat resembles the head of an elephant. read more about Ko Chang

Ko Chang Noi Not to be confused with the far bigger and better known Ko Chang of Trat province in the Gulf of Thailand, little Ko Chang or, as we have always known it, Ko Chang Noi is a formidable destination in its own right. One of Thailand's quietest, most relaxed, and undeveloped islands, Ko Chang Noi makes up for its lack of sparkle with an artsy, laid back atmosphere you'll find nowhere else. Don't expect luxury resorts and bus loads of short-term holiday makers but rather rustic read more about Ko Chang Noi

Ko Jum The little-known Andaman island of Ko Jum (aka Ko Pu) strikes an ideal balance of great beaches, thin crowds and ultra-relaxing atmosphere. With mass tourism having been left to neighbouring Ko Phi Phi and Ko Lanta, Jum's Muslim residents have happily preserved their traditional lifestyle. So enchanting is Ko Jum that we'll go out on a limb to call it one of our favourite Thai islands. Colourful fishing hamlets dot the east coast, where longtail boats bob amid the seaside villages and read more about Ko Jum

Ko Kham An idealic little blink-and-you'll-miss-it island barely a kilometre from Ko Maak, Ko Kham was once the perfect spot to really get away from it all. Crystal-clear waters and a number of coral reefs made the island popular with the snorkelling crowd and many boat outings from Ko Chang stopped here for an hour or two to have a look into the not-so-deep. A series of black volcanic rocks jut out of the snow-white sand on the island's eastern beach, and for those on the island they made for read more about Ko Kham

Ko Kho Khao Just a ten minute boat ride from the Takua Pa area of Phang Nga province, Ko Kho Khao (pronounced kaw koe cow) doesnt look very different from the mainland. However, for those seeking a family beach destination thats not as remote as nearby Ko Phra Thong but not as busy as Khao Lak or Phuket, Kho Khao is worth a visit. The islands long golden beaches are the main draw, and aesthetically these are similar to the beaches of the Khao Lak area further south. The waters are slightly murky read more about Ko Kho Khao

Ko Kradan A thin slip of an island off the coast of Trang province, Ko Kradan boasts a gorgeous white-sand beach stretching between fluffy green hills and the cerulean blue Andaman Sea. Also home to some good snorkelling and low-tide sandbars that make for the beach walk of a lifetime, Kradan is among Thailand's more visually spectacular islands. With some advanced planning, anyone from solo gap-year backpackers to groups of old friends to honeymooning couples and flashpacking families can enjoy a read more about Ko Kradan

Ko Kut We're going to go out on a limb and declare Ko Kut (also spelt Ko Kood) to be the most beautiful island we've seen in Thailand over two decades of travel to the kingdom. There. We said it. It really is just drop dead gorgeous. And we strongly recommend you add it to your itinerary the next time you holiday in Thailand. Set to the south of better known Ko Chang and Ko Maak, Ko Kut is a large, mountainous island whose interior remains largely jungle covered and whose western and southern read more about Ko Kut

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The best islands in Southeast Asia - Travelfish