The Seattle Seawolves are an American professional rugby union team based in the Seattle metropolitan area that competes in Major League Rugby (MLR). The team was founded in 2017. The Seawolves won two MLR championships in 2018 and 2019, and lost in the 2022 final and 2024 final. They play home matches at the 4,000-seat main stadium at Starfire Sports in Tukwila, a suburb south of Seattle.