The Seattle Seahawks are a professional American football franchise based in Seattle, Washington. The Seahawks compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) West division. The Seahawks joined the NFL in 1976 as an expansion team. The Seahawks are owned by Paul Allen and are currently coached by Pete Carroll. Since 2002, the Seahawks have played their home games at CenturyLink Field (formerly Qwest Field), located south of downtown Seattle. The Seahawks previously played home games in the Kingdome (1976–1999) and Husky Stadium (1994, 2000–2001).
The Seahawks are the only NFL franchise based in the Pacific Northwest region of North America, and thus attract support from a wide geographical area, including some parts of Oregon, Montana, Idaho, and Alaska, as well as Canadian fans in British Columbia and Alberta.Seahawks fans have been referred to collectively as the "12th Man", "12th Fan", or "12s". The Seahawks' fans have twice set the Guinness World Record for the loudest crowd noise at a sporting event, first on September 15, 2013, registering 136.6 dB during a game against the San Francisco 49ers and again on December 2, 2013, during a Monday Night Football game against the New Orleans Saints, with a then record-setting 137.6 dB.Over the years several notable players have been Seahawks, including Shaun Alexander, Michael Bennett, Brian Blades, Brian Bosworth, Nate Boyer, Chad Brown, Dave Brown, Nate Burleson, Kenny Easley, Joey Galloway, Jimmy Graham, Jacob Green, Matt Hasselbeck, Steve Hutchinson, Walter Jones, Cortez Kennedy, Dave Krieg, Steve Largent, Marshawn Lynch, Joe Nash, Paul Richardson, Sheldon Richardson, Eugene Robinson, Michael Robinson, Sidney Rice, Richard Sherman, Michael Sinclair, Mack Strong, Golden Tate, Lofa Tatupu, Marcus Trufant, Curt Warner, Chris Warren, Fredd Young and Jim Zorn as well as, for a brief time, Hall of Famers Carl Eller, Franco Harris, Warren Moon, John Randle, and Jerry Rice. Largent (1995), Kennedy (2012), Jones (2014), and Easley (2017) have been voted into the Pro Football Hall of Fame primarily or wholly for their accomplishments as Seahawks. Brown, Easley, Green, Jones, Kennedy, Krieg, Largent, Warner, and Zorn have been inducted into the Seahawks Ring of Honor along with Pete Gross (radio announcer) and Chuck Knox (head coach).
The Seahawks have won 10 division titles and three conference championships. They are the only team to have played in both the AFC and NFC Championship Games. They have appeared in three Super Bowls: losing 21–10 to the Pittsburgh Steelers in Super Bowl XL, defeating the Denver Broncos 43–8 for their first championship in Super Bowl XLVIII, and losing 28–24 to the New England Patriots in Super Bowl XLIX.