| Official Name: | Soi Dao |
| Native Name: | สอยดาว |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chanthaburi |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Patong |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 62,340 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 22180 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 2207 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 13.1372°N 102.2189°W |
Soi Dao (Thai: สอยดาว, in Thai pronounced as /sɔ̌j dāːw/) is a district (amphoe) in the northern part of Chanthaburi province, eastern Thailand.
The government created the minor district (king amphoe) Soi Dao on 1 January 1988, by splitting off five tambon from Pong Nam Ron district.[1] It was upgraded to a full district on 9 May 1992.[2]
Neighboring districts are (from the south clockwise) Pong Nam Ron, Khao Khitchakut, Kaeng Hang Maeo of Chanthaburi Province, Wang Sombun, and Khlong Hat of Sa Kaeo province. To the east is Battambang province of Cambodia.
The district is divided into five sub-districts (tambons), which are further subdivided into 68 villages (mubans). Sai Khao is a township (thesaban tambon) which covers parts of tambon Sai Khao and Pa Tong. There are a further five tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Patong | ปะตง | 11 | 14,902 | ||
| 2. | Thung Khanan | ทุ่งขนาน | 16 | 10,362 | ||
| 3. | Thap Chang | ทับช้าง | 16 | 15,840 | ||
| 4. | Sai Khao | ทรายขาว | 13 | 12,474 | ||
| 5. | Saton | สะตอน | 12 | 8,762 |