| Bell, D'Anthony |  CLE | S | RFA |  SEA |
| Brown, Pharaoh | SEA | TE | UFA |  MIA |
| Brown, Tre | SEA | CB | UFA |  SF |
| Burns, Artie | SEA | CB | UFA | MIA |
| Cracraft, River | MIA | WR | UFA | SEA |
| Darden, Jaelon | SEA | WR | RFA | |
| Darnold, Sam |  MIN | QB | UFA | SEA |
| Fant, George | SEA | OT | CC | |
| Forsythe, Stone | SEA | OT | UFA |  NYG |
| Gipson, Trevis | SEA | ED | UFA | |
| Griffin, Shaq | MIN | CB | UFA | SEA |
| Hankins, Johnathan | SEA | DT | UFA | SEA |
| Howell, Sam | SEA | QB | Trade | MIN |
| Jean-Charles, Shemar |  NO | CB | UFA | SEA |
| Jenkins, Rayshawn | SEA | S | CC | CLE |
| Jobe, Josh | SEA | CB | RFA | SEA |
| Jones IV, Ernest | SEA | LB | UFA | SEA |
| Jones, Dre'Mont | SEA | ED | CC |  TEN |
| Jones, Josh |  BAL | OT | UFA | SEA |
| Kupp, Cooper |  LAR | WR | CC | SEA |
| Lawrence, DeMarcus |  DAL | ED | UFA | SEA |
| Lock, Drew | NYG | QB | UFA | SEA |
| Lockett, Tyler | SEA | WR | CC | TEN |
| Metcalf, DK | SEA | WR | Trade |  PIT |
| Onujiogu, Joshua | SEA | ED | ERFA | |
| Reed, Jarran | SEA | DT | UFA | SEA |
| Robertson-Harris, Roy | SEA | DT | CC | NYG |
| Ross, Josh | SEA | LB | ERFA | SEA |
| Russell, Brady | SEA | TE | ERFA | SEA |
| Saubert, Eric | SF | TE | UFA | SEA |
| Sims, Steven | BAL | WR | UFA | SEA |
| Tomlinson, Laken | SEA | OG | UFA |  HOU |
| Valdes-Scantling, Marquez | NO | WR | UFA | SEA |
| Wallace, K'Von | SEA | S | UFA | |
| White, Cody | SEA | WR | ERFA | SEA |