| Official Name: | Thornton, Washington |
| Pushpin Map: | Washington |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Washington |
| Subdivision Type2: | County |
| Subdivision Name2: | Whitman |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 2310 |
| Coordinates: | 47.1208°N -117.3897°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 99176 |
| Area Code: | 509 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1509005 |
Thornton is an unincorporated community in Whitman County, Washington, United States. Founded in 1889 by P.M. Sheehan,[1] Thornton is located near U.S. Route 195, 7miles west of Oakesdale. Thornton had a post office with ZIP code 99176.[2]