| Sanjiang | |
| Native Name Lang: | zh-hans |
| Settlement Type: | Town |
| Pushpin Map: | Hainan |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Hainan |
| Coordinates: | 19.8808°N 110.602°W |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hainan |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Haikou |
| Subdivision Type3: | District |
| Subdivision Name3: | Meilan |
| Subdivision Type4: | Village-level divisions |
| Subdivision Name4: | 1 residential community 8 villages |
| Established Title: | Town created |
| Established Date: | March 1987 |
| Unit Pref: | Metric |
| Elevation M: | 12 |
| Population Density Km2: | auto |
| Timezone1: | China Standard |
| Utc Offset1: | +8 |
| Postal Code Type: | Postal code |
| Postal Code: | 570203 |
| Area Code: | 0898 |
Sanjiang is a town in Meilan District, in the southeastern suburbs of Haikou, Hainan, People's Republic of China,[1] and is located southeast of Haikou Meilan International Airport., it has one residential community (Chinese: 社区) and eight villages under its administration.[2]