Tup Island is one of the two hundred (approximately) islands in Krabi town in the province of Krabi, Thailand. It is also known by the names koh tap island, koh tup island, koh tub island or koh thap island. Tup Island is a beautiful tropical island with white powder sand and crystal- clear water in between a vivid blue sea. It is called the Krabi sea. It is one of the most beautiful beaches ever. This island is smaller in size compared to the other islands but is in the most popular ones. What makes Tup Island stand out from all the other islands in Krabi is the amazing sandbar emerging from under the water during low tide which connects Tup island to its neighbouring island called the chicken island. The event of emerging of the sandbar is known as ‘Talay Waek’ which means divided sea. You can walk along this sandbar and have the most amazing experience. It is the main attraction of this island.
Activities that one can do on Tup island are swimming, snorkelling, (Tup island is considered ideal for easy snorkelling and is very popular for it) sunbathing, exploring on foot, island hopping and also photography. While walking and swimming you can see fishes at the edges that will swim around your feet. There are no water sports on this island. It is more for relaxing and enjoying while having a calming experience. There is a restaurant on the chicken island, so you can walk there and have snacks and drinks. There is deep enough water on the sides where one can dive inside and cool down.

Tup Island is located in Muh Koh Poda Archipelago south-west of Ao Nang town between Koh Poda and Chicken Island. It belongs to Muh Koh Poda group islands which come under the administration of Haad Noppharat Thara- Mu Koh Phi Phi national park. The Muh Koh Poda group comprises of Koh Poda island, Koh Kai island, Koh Mo island and Koh Thap island (Tup Island).

Tup island comes under the most popular four islands tour. This four islands tour takes you to Pranang beach, tup island, chicken island and Poda island. You can get lunch services and pick up and drop services on this tour also. This tour involves more activities like kayaking, cliff diving, full moon parties and a visit to the national park.
Tup Island is approximately 9km from Ao Nang town. To get to Tup Island, you take a longtail boat from Ao Nang which costs 300 baht per person or a private boat for 2,200 baht. Best time to go there is in the morning because the tides are low at that time so you can have the experience of Talay Waek. Also, there are no longtail boats available after 4 pm so by coming in the morning one can spend 4-5 hours at the island.