2016 Seattle Sounders FC season
The 2016 Seattle Sounders FC season was the club's forty-second season of existence, their eighth in Major League Soccer and their eighth consecutive season in the top flight of American soccer.
The Sounders won their first MLS Cup at the end of the season, after the mid-season replacement of head coach Sigi Schmid with Brian Schmetzer in July.
Roster
Competitions
Preseason
Scrimmages
Desert Friendlies
Major League Soccer
League tables
Western Conference
Overall
Results summary
Results by matchday
Matches
MLS Cup Playoffs
Knockout round
Western Conference Semifinals
Western Conference Finals
MLS Cup Final
U.S. Open Cup
CONCACAF Champions League
2015–16
Quarterfinals
Mid-season friendlies
Statistics
Appearances and goals
- S2 playerTransfers
For transfers in, dates listed are when Sounders FC officially signed the players to the roster. Transactions where only the rights to the players are acquired are not listed. For transfers out, dates listed are when Sounders FC officially removed the players from its roster, not when they signed with another club. If a player later signed with another club, his new club will be noted, but the date listed here remains the one when he was officially removed from Sounders FC roster.In
| No. | Pos. | Player | Transferred From | Fee/Notes | Date | Source |
| 1 |  Seattle Sounders FC 2 | Free | ||||
| Denver Pioneers | Signed HGP deal | |||||
| 33 | Chicago Fire | Trade | ||||
| 12 | D.C. United | Free | ||||
| 13 | Stanford | Signed HGP deal | ||||
| 18 | Houston Dynamo | Free | ||||
| 39 | Seattle Sounders FC 2 | Free | ||||
| 25 | Cal State Dominguez Hills | Draft pick | ||||
| 9 |  Toronto FC | Free | ||||
| 10 |  Boca Juniors | Undisclosed | ||||
| 21 | Gimnasia | Undisclosed |
Draft Picks
Draft picks are not automatically signed to the team roster. Only those who are signed to a contract will be listed as transfers in. Only trades involving draft picks and executed after the start of 2015 MLS SuperDraft will be listed in the notes.| Date | Player | Number | Position | Previous Club | Notes | Ref |
| January 14, 2016 | Tony Alfaro | 25 | DF | Cal State Dominguez Hills | MLS SuperDraft 2nd Round Pick ; Pick acquired from Toronto FC through Philadelphia Union and Orlando City in exchange for defender Eriq Zavaleta. | |
| January 14, 2016 | Zach Mathers | MF | Duke | MLS SuperDraft 2nd Round Pick | ||
| January 19, 2016 |  Emir Alihodzic | MF | Nebraska | MLS SuperDraft 3rd Round Pick ; Pick acquired from D.C. United in exchange for midfielder Alex Caskey. | ||
| January 19, 2016 | Michael Nelson | DF | Old Dominion | MLS SuperDraft 4th Round Pick |
Out
| No. | Pos. | Player | Transferred To | Fee/Notes | Date | Source |
| 42 | Colorado Rapids | Waived, Second pick in 2015 MLS Waiver Draft | ||||
| 19 | San Jose Earthquakes | Waived | ||||
| 13 |  Boyacá Chicó F.C. | Waived | ||||
| 12 |  Herediano | Waived | ||||
| 1 | Retired | Waived | ||||
| 8 | Retired | Waived | ||||
| 18 |  Joinville Esporte Clube | Waived | ||||
| 5 |  Coventry City | Free Transfer | ||||
| 27 | D.C. United | Traded for general and targeted allocation money | ||||
| 10 | Colorado Rapids | Waived, Traded for allocation money | ||||
| 9 |  Shanghai Shenhua | Undisclosed Fee | ||||
| Seattle Sounders FC 2 | Waived | |||||
| 5 | New York Cosmos | Out on Loan | ||||
| 31 | Minnesota United FC | Out on Loan | ||||
| 99 | Oklahoma City Energy FC | Waived |