2017 Seattle Seahawks

The 2017 Seattle Seahawks season was the franchise's 42nd season in the National Football League and the eighth under Pete Carroll. For the first time since 2011, the Seahawks did not play the Carolina Panthers during the regular season. The Seahawks tried to improve their 10–5–1 record from 2016. However, after losing to the Los Angeles Rams in Week 15, they failed to reach the goal. After the Falcons' week 17 win over the Panthers, they were eliminated from playoff contention for the first time since 2011. They also failed to achieve a 10-win season for the first time since that same season.

Draft
Draft trades

Undrafted free agents
All undrafted free agents were signed after the 2017 NFL Draft concluded on April 29, unless noted otherwise.

Schedule
Note: Intra-division opponents are in bold text.

Week 17: vs. Arizona Cardinals
With the loss, the Seahawks finished the season with 9–7. This is not only the first time they failed to qualify for the playoffs since 2011, but also the first season they have less than 10 wins during the regular season since that year. Besides, the Seahawks went 4–4 at home, the worst record since Russell Wilson entered the league.