Seattle Mariners Logo
⚾ MLB: 1977-2020 44
Joined the American League as an expansion team to begin the 1977 season.
Seattle Seahawks Logo
🏈 NFL: 1976-2020 45 1
The Seahawks joined the NFL in 1976 as an expansion team. They have played their home games at Lumen Field in Seattle's SoDo neighborhood since 2002. They previously played home games in the Kingdome ...

Defunct Teams

Teams that have folded or moved away from the Seattle area.
F i l t e r   &   S o r t 
Seattle SuperSonics Logo
The team was originally established as the Seattle SuperSonics, an expansion team that joined the NBA for the 1967โ€“68 season. The SuperSonics relocated from Seattle, Washington to Oklahoma City in 200...
Seattle Pilots Logo
⚾ MLB: 1969-1969 1
Joined the American League as an expansion team to begin the 1969 season. Left Seattle and relocated to Milwaukee to begin the 1970 season. Moved to the National League in 1998 in order to faciliate MLB divisional realignment.
Seattle Metropolitans Logo
The Seattle Metropolitans were a professional ice hockey team based in Seattle, Washington, which played in the Pacific Coast Hockey Association from 1915 to 1924. During their nine seasons, the Metro...
Spokane Canaries Logo
The original Victoria franchise of the PCHA, the Senators, were formed in 1911, and became the Aristocrats in 1913. That incarnation is best known for defeating the Stanley Cup champion Quebec Bulldog...
The early history of sports contains hundreds of teams that appeared for only 1 or 2 seasons before folding. Most of these teams have no historical photographs or articles, so are omitted from this list to reduce clutter. To view a comprehensive list of all defunct teams, browse to the early leagues section for baseball, football, basketball, or hockey.