Mu Ko Ang Thong is a marine national park in the Gulf of Thailand in Surat Thani Province. It covers 42 islands in a total area of 63,750 rai ~ , of which about are land and the rest is water. The park was established on 12 November 1980. The northern tip of Ko Phaluai is also part of the marine park. There is a ranger station, bungalows, a shop, and a restaurant at Ao Phi Beach on Ko Wua Talap.
The name "Ang Thong" (Thai: à ¸Âà ¹Âà ¸²à ¸Âà ¸Âà ¸Âà ¸Â) means 'bowl of gold'. "Mu Ko" (à ¸«à ¸¡à ¸¹à ¹Âà ¹Âà ¸Âà ¸²à ¸°) simply means 'group of islands'.
Since 2002 the park has been registered as Ramsar site number 1184.
Mu Ko Ang Thong is a national park located in shallow water near the shore. The average water depth is about .
<Gallery> Image:Mu Ko Ang Thong National Park, Islands 2, Thailand.jpg|Ang Thong National Park from Ko Wua Talab Image:Ko Mae Ko - Ang Thong.jpg|Beach, Ko Mae Ko Image:Ko Wua Talab beach - Ang Thong.jpg|Beach, Ko Wua Talab Image:Mu Ko Ang Thong, Island lagoon, Thailand.jpg|Laguna, Ko Mae Ko Mu Ko Ang Thong, Palm beach, Thailand.jpg|Ranger station Mu Ko Ang Thong, Palm beach 2, Thailand.jpg|Beach Mu Ko Ang Thong, Island in the sea, Thailand.jpg|Ko Wua Talab </Gallery>