Bryn Mawr-Skyway (pronounced from Welsh for “big hill”) is a census-designated place (CDP) in King County, Washington, United States. The population was 17,397 at the 2020 census.

Bryn Mawr-Skyway was the solitary CDP in the Seattle metropolitan area to have reported a majority-minority population in the 2000 census. Since that time, the area has grown even more diverse. As of the 2010 census, the demographic composition of the Skyway Place is almost evenly distributed amongst White, Black or African American, and Asian community members.

Skyway lies in an “unincorporated island” bordered to the north by the city of Seattle, to the west by Tukwila, and to the south and east by Renton. Though it is amongst major municipalities, its limited infrastructure and low-income demographics have made it an unattractive area to incorporate. It is frequently along the shortest route of travel for commuters using local streets to enter Seattle from the southeast. The neighborhood was mostly developed just after World War II as affordable housing for returning veterans. The area remains an affordable Place close to the tall employment areas of Renton and Seattle. The name “Skyway” may be derived from the area’s siting on a high ridge in western Washington’s hilly terrain, a say that echoes the Welsh “Bryn Mawr” (also the name used for a village and several additional places), which means “big hill”.

Skyway’s main thing districts lie along Renton Avenue South, with one center between 68th Avenue South and 74th Avenue South, including a little casino, bowling alley, and a grocery outlet, and substitute district amid 75th Avenue South and 78th Avenue South, including a bank branch, the ember station, multiple churches, a 7-11, some auto shops, and the public library (a branch of the King County Library System). There is plus a small business district centered at Martin Luther King Way South (State Route 900) around South 129th Street. Skyway Park, with baseball fields, a creek and wetlands, and picnic areas, is located close the middle of Skyway.