| Official Name: | Foster, Washington |
| Pushpin Map: | Washington#USA |
| Pushpin Label: | Foster |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Washington |
| Subdivision Type2: | County |
| Subdivision Name2: | King |
| Established Title: | Established |
| Established Date: | 1903 |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Coordinates: | 47.4814°N -122.2756°W |
| Postal Code Type: | ZIP code |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
Foster, Washington was a former community in King County in the U.S. state of Washington. After being annexed in 1989,[1] Foster's former area is a part of the city of Tukwila.
A post office called Foster was established in 1903, and remained in operation until 1907.[2] The community was named after Joseph Foster, an early settler.[3]
Besides the post office, at one time it had a school.[4] In the 19th century, there was a Foster Ferry Landing on the Duwamish River near the junction of the river, 56th Avenue South, and the Green River Trail. The name lingers on in the Foster Golf Links immediately upstream of that point and in Joseph Foster Memorial Park about 0.25miles to the south-southwest. A rail station, known as Foster Station on the Puget Sound Electric Railway (the "Interurban"), existed at the location of a Tukwila Park and Ride.[5]