The Seahawks improved upon their record of 7–9 from last season and had their first winning season since 2007. Their 11 victories was the third best in franchise history, and the Seahawks went undefeated at home for the third time in franchise history after 2003 and 2005. Additionally, with their victory over the Washington Redskins at FedEx Field in the Wild Card round, the Seahawks won their first road playoff game in almost 30 years. However, despite holding a lead with just 30 seconds left in regulation, the Seahawks were defeated by the Atlanta Falcons in the divisional round by a score of 30–28.
On April 3, 2012, Nike unveiled the new design for the uniforms and logo for the Seahawks. The new designs incorporate a new accent color, "Wolf Grey", and the main colors are "College Navy" and "Action Green". The uniforms incorporate "feather trims", twelve feathers printed on the neckline and down each pant leg to represent the "12th Man", referring to the team's fans.
^[a] The team traded its original first-round selection (#12 overall) to the Philadelphia Eagles in exchange for the Eagles' first- (#15 overall), fourth- (#114 overall) and sixth- (#172 overall) selections.
^[b] The team traded its original second-round selection (#43 overall) to the New York Jets in exchange for the Jets' second- (#47 overall), fifth- (#154 overall) and seventh- (#232 overall) round selections.
After facing the Cardinals on the road, the Seahawks returned home for a home game against the Cowboys. The game went very well for the Seahawks as the team improved to 1-1. This is also the first win for rookie QB Russell Wilson.
The game had a controversial ending, as it appears that the ball was intercepted by Green Bay first when replayed - it is considered a Touchdown for Seattle on the final play.
With the win, the Seahawks improved to 2-1. With the 49ers' loss to the Vikings on Sunday, the teams are now tied for 2nd in the NFC West. The Seahawks' defense recorded a very good note: sacking QB Aaron Rodgers 8 times, all coming in the first half of the game.
 The NFL released an official statement that, while acknowledging that pass interference should have been called on Tate, supported the decision to uphold the play as simultaneous possession.
The Seahawks win improved them to 10-5 and clinches at least a playoff spot. In order to win the NFC West The Seahawks need to beat the St. Louis Rams at home next week along with the 49ers loss to the Arizona Cardinals to wrap up the NFC West. Also a Packers loss to the Vikings for Seattle to get a first Round Bye as well. However a loss or a 49ers win, the Seahawks will be the #5 seed heading on the road to play in the Wild Card Round in January.
With the NFC West title still up for grabs the Seahawks finished their season at home against the Rams. Trying to avoid being swept by the team, they finished the season with a record of 11-5. 8-0 at home. However, with the Niners' win over the Cardinals the team would end up finishing in 2nd place with the NFC's #5 seed.
The Seahawks fell behind Atlanta by 20 points, trailing 20-0 at halftime and 27-7 with just over 17 minutes remaining in the game. Seattle scored three touchdowns in the fourth quarter to take the lead 28-27 with 31 seconds left to play. But Matt Ryan quickly completed two long passes and Matt Bryant kicked a 49-yard field goal to give Atlanta the final margin of victory. Russell Wilson's Hail Mary pass on the final play was intercepted by Julio Jones in the end zone (Wilson's only interception in the game), ending Seattle's season.