Franchise 51 seasons 420–381–1 all-time 21 playoff trips 2 Super Bowls
2005 players
Passing
| Matt Hasselbeck | 450 | 294 | 3,455 | 24 | 10 | 7.7 |
| Seneca Wallace | 25 | 13 | 173 | 1 | 1 | 6.9 |
Rushing
| Shaun Alexander | 370 | 1,880 | 27 | 5.1 |
| Maurice Morris | 71 | 288 | 1 | 4.1 |
| Matt Hasselbeck | 36 | 124 | 1 | 3.4 |
| Leonard Weaver | 17 | 80 | 0 | 4.7 |
| Mack Strong | 17 | 78 | 0 | 4.6 |
| Darrell Jackson | 1 | 7 | 0 | 7.0 |
| Peter Warrick | 1 | 5 | 0 | 5.0 |
| Seneca Wallace | 6 | -5 | 0 | -0.8 |
Receiving
| Bobby Engram | 67 | 774 | 3 | 11.6 |
| Joe Jurevicius | 55 | 694 | 10 | 12.6 |
| Jerramy Stevens | 45 | 554 | 5 | 12.3 |
| Darrell Jackson | 38 | 482 | 3 | 12.7 |
| D.J. Hackett | 28 | 400 | 2 | 14.3 |
| Peter Warrick | 11 | 180 | 0 | 16.4 |
| Mack Strong | 22 | 166 | 0 | 7.5 |
| Jerheme Urban | 7 | 151 | 0 | 21.6 |
| Ryan Hannam | 13 | 89 | 1 | 6.8 |
| Shaun Alexander | 15 | 78 | 1 | 5.2 |
| Maurice Morris | 5 | 48 | 0 | 9.6 |
| Leonard Weaver | 1 | 12 | 0 | 12.0 |
Defense
| Lofa Tatupu | MLB | 85 | 66 | 4.5 | 3 | 10 | 0 |
| Michael Boulware | DB | 63 | 48 | 2.0 | 4 | 9 | 1 |
| Jordan Babineaux | S | 62 | 49 | 0.0 | 3 | 8 | 1 |
| Marcus Trufant | CB | 59 | 50 | 1.0 | 1 | 14 | 1 |
| Leroy Hill | OLB | 59 | 38 | 6.5 | 0 | 2 | 1 |
| D.D. Lewis | LB | 53 | 35 | 0.0 | 0 | 1 | 1 |
| Marquand Manuel | S | 51 | 38 | 0.0 | 0 | 2 | 1 |
| Kelly Herndon | DB | 49 | 45 | 0.0 | 2 | 9 | 1 |
| Rocky Bernard | DT | 43 | 34 | 8.5 | 0 | 3 | 0 |
| Grant Wistrom | DE | 40 | 29 | 3.0 | 0 | 6 | 0 |
| Bryce Fisher | DE | 36 | 24 | 9.5 | 0 | 8 | 2 |
| Marcus Tubbs | DT | 32 | 20 | 6.0 | 0 | 2 | 2 |
| Jamie Sharper | OLB | 26 | 17 | 0.0 | 0 | 0 | 1 |
| Kevin Bentley | LB | 26 | 21 | 0.0 | 0 | 1 | 0 |
| Jimmy Williams | DB | 24 | 16 | 0.0 | 2 | 5 | 0 |
| Joe Tafoya | DE | 24 | 14 | 1.0 | 0 | 1 | 1 |
| Josh Scobey | RB | 23 | 17 | 0.0 | 0 | 0 | 0 |
| Chartric Darby | DT | 23 | 12 | 2.0 | 0 | 0 | 0 |
| Ken Hamlin | DB | 23 | 19 | 0.0 | 0 | 2 | 0 |
| Andre Dyson | CB | 18 | 17 | 0.0 | 1 | 10 | 1 |
| Isaiah Kacyvenski | LB | 17 | 14 | 0.0 | 0 | 1 | 1 |
| Craig Terrill | DT | 14 | 8 | 2.0 | 0 | 2 | 0 |
| Rodney Bailey | DE | 10 | 5 | 0.0 | 0 | 0 | 1 |
| John Howell | DB | 10 | 7 | 0.0 | 0 | 0 | 0 |
| Niko Koutouvides | LB | 8 | 6 | 0.0 | 0 | 0 | 0 |
| Maurice Morris | RB | 7 | 5 | 0.0 | 0 | 0 | 0 |
| Michael Harden | DB | 7 | 6 | 0.0 | 0 | 0 | 1 |
| Etric Pruitt | DB | 5 | 5 | 0.0 | 0 | 1 | 0 |
| Leonard Weaver | FB | 4 | 2 | 0.0 | 0 | 0 | 0 |
| Sean Locklear | G | 4 | 4 | 0.0 | 0 | 0 | 0 |
| Cornelius Wortham | LB | 4 | 2 | 0.0 | 0 | 0 | 0 |
| Josh Brown | K | 3 | 2 | 0.0 | 0 | 0 | 0 |
| Bobby Engram | WR | 2 | 2 | 0.0 | 0 | 0 | 0 |
| J.P. Darche | LS | 2 | 2 | 0.0 | 0 | 0 | 0 |
| Steve Hutchinson | G | 2 | 2 | 0.0 | 0 | 0 | 0 |
| Alain Kashama | DE | 2 | 1 | 0.0 | 0 | 0 | 0 |
| Joe Jurevicius | WR | 2 | 2 | 0.0 | 0 | 0 | 0 |
| Jerramy Stevens | TE | 2 | 2 | 0.0 | 0 | 0 | 0 |
| Peter Warrick | WR | 1 | 1 | 0.0 | 0 | 0 | 0 |
| Matt Hasselbeck | QB | 1 | 1 | 0.0 | 0 | 0 | 0 |
| Ryan Hannam | TE | 1 | 1 | 0.0 | 0 | 0 | 0 |
| Floyd Womack | G | 1 | 1 | 0.0 | 0 | 0 | 0 |