Tukwila (/tʌkˈwɪlə/ tuk-WIL-ə) is a suburban city in King County, Washington, United States. The northern edge of Tukwila borders the city of Seattle. The population was 19,107 at the 2010 census. The population was 20,018 at the 2015 Estimate from Office of Financial Management. The City of Tukwila is a community of communities: residents of many diverse origins make Tukwila their home, a large commercial center draws workers and consumers to the city daily, and industry thrives with the confluence of rivers, freeways, railroads, and Seattle-Tacoma International Airport.

The earliest people in Tukwila were the Duwamish who made their homes along the Black and Duwamish Rivers. The name "Tukwila" is the Chinook Jargon word for "nut" or "hazelnut", referring to the hazelnut trees that grew in the area. The Duwamish lived in cedar longhouses, hunted and fished, picked wild berries, and used the river for trade with neighboring peoples.

In 1853, the first Caucasian settler was Joseph Foster, a Canadian pioneer who had traveled to the northwest from Wisconsin. Foster would become known as the "Father of Tukwila" and serve King County, Washington Territory in the legislature for 22 years. Today, the site of Foster's home on the banks of the Duwamish River is part of Fort Dent Park, which also served as a military base during the 1850s Indian Wars. Foster's name is memorialized in the Foster neighborhood of Tukwila, where Foster High School is located.

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