The List of Ramsar wetlands of Thailand comprises Thai wetlands deemed to be of "international importance" under the Ramsar Convention. For a full list of all Ramsar Sites worldwide, see the Ramsar list of wetlands of international importance.
According to WWF, wetlands are one of the most threatened of all ecosystems, because of progressive loss of vegetation, salinization, excessive inundation, water pollution, invasive species, excessive development and road building.
| Name | Ramsar ID | Provinces | Area (km²) |
Date included | |
|---|---|---|---|---|---|
| Kuan Ki Sian of the Thale Noi Non-hunting Area Wetlands | 948 | Songkhla | 4.94 | May 1998 | |
| Bueng Khong Long Non-hunting Area | 1098 | Nong Khai | 22.14 | July 5 2001 | |
| Don Hoi Lot | 1099 | Samut Songkhram | 875 | July 5 2001 | |
| Krabi River Estuary | 1100 | Krabi | 212.9914 | July 5 2001 | |
| Nong Bong Kai Non-hunting Area | 1101 | Chiang Rai | 4.34 | July 5 2001 | |
| Princess Sirindhorn Wildlife Sanctuary (Pru To Daeng Wildlife Sanctuary) |
1102 | Narathiwat | 201 | July 5 2001 | |
| Hat Chao Mai Marine National Park - Ko Libong Non-Hunting Area - Trang River Estuaries |
1182 | Trang | 663.13 | August 14 2002 | |
| Kaper Estuary - Laem Son National Park - Kraburi Estuary |
1183 | Ranong | 1220.46 | August 14 2002 | |
| Mu Ko Ang Thong Marine National Park | 1184 | Surat Thani | 102 | August 14 2002 | |
| Phang Nga Bay Marine National Park | 1185 | Phang Nga | 400 | August 14 2002 | |
| Khao Sam Roi Yot Wetlands | - | Prachuap Khiri Khan | 18 | nominated | |
| Bueng Kut Ting | - | Nong Khai | nominated [1] | ||
| Mekong River | - | Chiang Rai | nominated | ||
| Pai River Basin | - | Mae Hong Son | nominated | ||
| Salween River Basin | - | Mae Hong Son, Tak | nominated | ||
| Upper Nan River Basin | - | Nan | nominated | ||
| Khlong Chompu Basin | - | Phitsanulok | nominated | ||
| Bung Boraphet | - | Nakhon Sawan | nominated | ||
| Mekong River | - | Loei | nominated | ||
| Lower Songkram River Basin | - | Nong Khai, Sakon Nakhon, Nakhon Phanom, | nominated | ||
| Lower Mun River Basin and Mekong River | - | Ubon Ratchathani | nominated | ||
| Inner Gulf of Thailand | - | Chonburi, Chachoengsao, Samut Prakan, Samut Sakhon, Samut Songkhram and Phetchaburi |
nominated | ||
| Hin Krud Koh Ram Ra to Ban Klang Ao | - | Prachuap Khiri Khan | nominated | ||
| Chumphon Coast and Wetland | - | Chumphon | nominated | ||
| Ao Ban Don | - | Surat Thani | nominated | ||
| Kra Island | - | Nakhon Si Thammarat | nominated | ||
| Pak Phanang Coast and Talumphuk Cape | - | Nakhon Si Thammarat | nominated | ||
| Ao Pattani | - | Pattani | nominated | ||
| Songkhla Lake and Coast (Sathing Phra Peninsula) | - | Songkhla and Phatthalung | nominated | ||
| Hat Thai Mueang and Northwestern Coast of Phuket (Tha Chat Chai) | - | Phang Nga and Phuket | nominated | ||
| Trad Mangrove forest | - | Trad | nominated |