The Seattle Seawolves are an American professional rugby union team based in Tukwila, Washington. The team was founded in 2017 and competes in Major League Rugby (MLR), the top-level rugby union competition in the United States that began play in 2018. The Seawolves won two MLR championships in 2018 and 2019, and lost in the 2022 final. They play at Starfire Sports, a 4,500-seat stadium in Tukwila that primarily serves soccer teams.

Tukwila is a suburban city in King County, Washington, United States, located immediately to the south of Seattle. The population was 21,798 at the 2020 census.