Thailand’s Secret Islands

Step away from the crowds and discover a quieter side of Thailand. These hidden islands, scattered across the Andaman Sea and the Gulf of Thailand, offer crystal-clear water, soft white sand, and a peaceful, untouched atmosphere.

Many islands are perfect for snorkeling right off the beach, with vibrant coral reefs and colorful marine life. You’ll also find unique highlights like sandbars connecting islands, curved bays, and striking rock formations—ideal for stunning photos.

With fewer visitors, the experience feels more private and relaxing. Swim in turquoise waters, kayak along quiet shores, or simply unwind on uncrowded beaches at your own pace.

If you’re looking for beautiful islands without the crowds and a truly different escape, this is your chance. Click to explore these hidden gems before everyone else does—and let’s see which islands you’ll want to visit next! 

1

Koh Khang Khao

Koh Khang Khao is one of the highlight islands in the Kam Islands, located within Laem Son National Park in Ranong. It is a small island that remains highly pristine, with no permanent structures or commercial facilities, offering a peaceful and untouched natural atmosphere. The name “Koh Khang Khao” (Bat Island) comes from the past when the island was home to a large population of fru...

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2

Koh Japan

Koh Japan is one of the key islands in the Kam Islands group, managed by Laem Son National Park. It is a small island that remains highly pristine due to the absence of permanent structures or accommodations, allowing its coastal ecosystem to stay close to its natural state. The beach is especially notable for its extremely fine white sand, almost powder-like in texture. This is formed from the na...

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3

Koh Kam Tok

Koh Kam Tok has a curve-shaped inlet where the park protection unit in charge of guarding and providing facilitation to tourists is located. To reach the island, it takes 20 minutes by boat from Ko Khang Khao. This panoramic view of the island is one of the famous destination among the tourist and local since the view is quite different to other island. It is the area of white sandy beac...

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4

Koh Pha

Koh Pha is a hidden paradise in the Andaman Sea, often referred to as the “Maldives of Thailand” due to its striking contrast between powdery white sand and vibrant blue waters. The island was once covered with lush vegetation, but following the devastating 2004 Tsunami, its geography transformed dramatically, leaving behind a shifting sandbar and scattered rocks that appear and disapp...

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5

Khai Nai Island

Khai Nai Island is one of the hidden gems of Phang Nga that attracts travelers from around the world. Despite its small size—small enough to walk around in a short time—the island offers breathtaking natural beauty. Its most distinctive feature is the powdery white sand beach, soft and clean, contrasting beautifully with the deep blue sea. What makes Khai Nai Island truly special is th...

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6

Koh Khai Nok

Koh Khai Nok is a well-loved destination among both Thai and international travelers. This small island in the Andaman Sea is known for its unique rock formations and nearly continuous stretch of clean white sandy beaches. Its most captivating feature is the crystal-clear water, where you can easily see fine sand beneath your feet and schools of striped fish swimming close to shore. The island off...

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7

Koh Rang Yai

Koh Rang Yai is a small island located east of Phuket Province, in the Koh Kaew Subdistrict of Phuket City District. Its proximity to the mainland makes it easily accessible for day trips. Situated in Phang Nga Bay, the island enjoys relatively calm waters with gentle waves compared to the western Andaman coast, making it ideal for tourists seeking relaxation or light water activities such as swim...

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8

Maiton Island

Maiton Island, or Koh Mai Thon, often referred to as "Honeymoon Island," is a boutique private paradise characterized by its unique elongated shape resembling a wooden log. Situated approximately 9 kilometers off the southeast coast of Phuket, the island stands as a testament to successful environmental preservation. Due to its private ownership and strict daily quotas on visitor numbers, the isla...

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9

Koh Rok Nok

Ko Rok Nok is widely recognized as one of the most pristine island destinations in the Andaman Sea, serving as the southern jewel of the Mu Ko Lanta National Park. Geographically, it sits in tandem with its sister island, Ko Rok Nai, separated by a narrow sea channel approximately 250 meters wide. While Ko Rok Nai is characterized by steep limestone cliffs and rugged terrain, Ko Rok Nok is a parad...

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10

Lao Lading Island

Lao Lading Island, widely known among international travelers as "Paradise Island," is a stunning gem within the Koh Hong archipelago, situated under the jurisdiction of Than Bok Khorani National Park in Krabi Province. Geographically, the island is characterized by towering, jagged limestone cliffs that embrace a small, secluded sandy beach from nearly every side. This natural formation creates a...

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11

Koh Lidi

Koh Lidi is situated within the boundaries of Mu Ko Phetra National Park and is a recognized site under the Satun UNESCO Global Geopark. The name "Lidi" is derived from a Malay word meaning "thin stick" or "coconut leaf spine," referencing the long, slender physical appearance of the island chain. The area primarily consists of two main islands: Koh Lidi Yai and Koh Lidi Lek. The topography is cha...

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12

Koh Langka Jiew

Langkajiu Island is one of the most famous islands in the Chumphon Archipelago National Park, located about 12 kilometers off Hat Sai Ri Beach. It is a small island with a relatively short perimeter but is full of charm in terms of history, nature, and the richness of its marine ecosystem. The island has natural lim during his southern tour in 1897 (B.E. 2430). The inscription is located at t...

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13

Ko Thalu Chumphon

Ko Thalu is an island that combines natural beauty both above and below the water. It is one of the “four islands” that tourists usually visit on snorkeling tours in Chumphon. Above the water, the island’s most prominent feature is a large cave passage that pierces through the island. Visitors can swim or take a small boat through this passage, creating an exciting experience and...

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14

Ko Ngam Yai Chumphon

Ko Ngam Yai is a towering limestone island without a beach, making it inaccessible to visitors for landing because part of the island is under a swiftlet nest concession. Tourists are therefore limited to activities around the island. The true wonder of Ko Ngam Yai lies underwater, where it is considered one of the best diving spots in Chumphon. The waters here are rich with ma...

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15

Krok island

Krok island is a small, exclusive island covering approximately 0.05 square kilometers, located just a few kilometers west of the Pattaya coastline. Although it is a private island, it warmly welcomes visitors to experience the beauty of its powdery white sand beach that stretches along the eastern side, creating a stunning contrast with the crystal-blue waters. The most distinctive feature o...

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16

Sak Island

Sak Island is a small, uniquely shaped island resembling a horseshoe or the letter "U." Located only a few hundred meters from the larger Ko Lan, this small island is a paradise for relaxation. It offers a level of privacy and quietness that is hard to find on the main beaches of Pattaya. The island features two main shorelines North Beach and South Beach which are conveniently connected by a...

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17

Koh Kram Noi Island

Koh Kram Noi Island is a small island located near Koh Kram Yai, under the supervision of the Royal Thai Navy. The distinctive charm of this island lies in its undisturbed natural state; as it is not a primary stop for large tour boats, Koh Kram Noi maintains an exceptionally quiet and private atmosphere. The beaches boast fine, creamy white sand that contrasts beautifully with the gradient shades...

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18

Koh Kudee

Koh Kudee it lies approximately 6 kilometers offshore. Besides Koh Kudee there are two smaller islands, one is Koh Khangkhao and another is Koh Ruesee Cave. All three islands lie a little to the east of Koh Samet. The islands have beautiful natural landscapes and ringed by fine beaches which are ideal for swimming and camping on....

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19

Chula Island

Chula Island is one of the islands located close to the Chanthaburi coast, often mentioned as an island that retains its pristine nature and serves as a true sanctuary for those wishing to immerse themselves in nature. Access to the island requires a boat trip from Laem Sing shore or other authorized points. Upon arriving at the island, you will discover a fine, soft white-sand beach stretchi...

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20

Koh Kham

Koh Kham is a small private island located just about 1 kilometer from Koh Mak in Trat Province. It has earned the nickname “Emerald of the Trat Sea” thanks to its exceptionally clear waters with striking emerald-green tones that shimmer under sunlight, allowing visitors to see the sandy seabed with remarkable clarity. The island offers a peaceful, uncrowded atmosphere due to cont...

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