Exclusive economic zone of Thailand
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Thailand has the world's 64th largest exclusive economic zone (EEZ), with an area of 305,778 km2 (118,062 mi2).[1][2] It claims an EEZ of 200 nmi (370.4 km; 230.2 mi) from its shores, which has long coastlines with the Andaman Sea and Strait of Malacca to the west and the Gulf of Thailand to the east, although all of its EEZ is limited by maritime boundaries with neighbouring countries.
Thailand's western sea territory stretches from the west coast of southern Thailand in the Andaman Sea and the Strait of Malacca. It shares treaty-defined maritime boundaries with Myanmar, the Andaman and Nicobar Islands of India, Indonesia and Malaysia.

| Sea zone | Gulf of Thailand[2][3] | Andaman Coast & Northern Strait of Malacca[2][3] | Notes |
|---|---|---|---|
| Internal waters | 54,103,470 km2 (20,889,470 sq mi) | 7,850,570 km2 (3,031,120 sq mi) | |
| Territorial sea | 29,344,360 km2 (11,329,920 sq mi) | 23,723,860 km2 (9,159,830 sq mi) | |
| Contiguous zone | 23,909,180 km2 (9,231,390 sq mi) | 13,604,040 km2 (5,252,550 sq mi) | |
| EEZ | 88,193,970 km2 (34,051,880 sq mi) | 75,633,650 km2 (29,202,320 sq mi) | |
| Malaysia–Thailand joint development area | 7,125.22 km2 (2,751.06 sq mi) | Located in a specific economic zone. | |
| Combined | 202,676.20 km2 (78,253.72 sq mi) | 120,812.120 km2 (46,645.820 sq mi) | |
| Total (includes the maritime area of Thailand) | 323,488.32 km2 (124,899.54 sq mi) |
