| Thandwe | |
| Official Name: | Thandwe |
| Pushpin Map: | Burma |
| Settlement Type: | Town |
| Subdivision Type: | Country |
| Subdivision Name: |  Myanmar |
| Subdivision Type1: | State |
| Subdivision Type2: | Township |
| Subdivision Name2: | Thandwe |
| Subdivision Type3: | Town |
| Subdivision Name3: | Thandwe |
| Area Total Km2: | 3522.798 |
| Coordinates: | 18.4651°N 94.3665°W |
| Timezone: | MST |
| Utc Offset: | 6:30 |
| Population Total: | 133484[1] |
| Founder: | Vasudeva |
| Population As Of: | 2014 |
| Population Urban: | 14327 |
| Population Density Km2: | auto |
| Postal Code Type: | Postal code |
| Postal Code: | 0717x |
| Area Code Type: | Calling code |
| Area Code: | 4365 |
Thandwe ("Thandway" in Arakanese; in Burmese pronounced as /θàɰ̃dwɛ́ mjo̰/; formerly Sandoway), historically called Dwaraddy, is a town and major seaport in Rakhine State, the westernmost part of Myanmar.
Thandwe is very ancient, and is said to have been at one time the capital of Rakhine State, then called Arakan. The district has an area of 3784sqmi. The area is mountainous, and spurs of the Arakan Mountains reach the coast. Some of the peaks in the north are over high. The streams are only mountain torrents to within a few miles of the coast; the mouth of the Khwa forms a good anchorage for small boats. The rocks in the Arakan Range and its spurs are metamorphic, and include clay, slates, ironstone and indurated sandstone; towards the south, ironstone, trap and rocks of basaltic character are common; veins of steatite and white fibrous quartz are also found. Between 1961 and 1990, the mean annual rainfall was . Nearby Ngapali Beach is popular among tourists.
During the Myanmar civil war, the town was the site of clashes between the Arakan Army and Myanmar's military, with the Arakan Army taking control of Ngapali beach and several military outposts surrounding the town.[2] [3] According to reports, the Arakan Army seized the town's prison on 15 July, with the town's remaining military battalions falling the next day and giving the Arakan Army full control of the town.[4]
Thandwe has a tropical monsoon climate (Köppen climate classification Am). Temperatures are very warm throughout the year. There is a winter dry season (November–April) and a summer wet season (May–October). Torrential rain falls from June to September, with over 1200mm falling in each of the months of June, July and August. The rainfall in 1905 was .