| Season: | 2005 |
| Chrtitle: | Chairman |
| League Result: | 7th |
| Cup1 Result: | Round of 16 |
| Cup2 Result: | 5th |
| League Topscorer: | Park Chu-young (12) |
| Season Topscorer: | Park Chu-young (18) |
| Highest Attendance: | 48,375 vs Pohang (League, 10 July) |
| Lowest Attendance: | 10,133 vs Bucheon (League, 19 June) |
| Average Attendance: | 22,010 |
| Pattern La1: | _FCSEOUL_05h |
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| Pattern La2: | _FCSEOUL_05a |
| Pattern B2: | _FCSEOUL_05a |
| Pattern Ra2: | _FCSEOUL_05a |
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| Nextseason: | 2006 |
See main article: 2005 K-League.
See main article: 2005 Korean FA Cup.
See main article: 2005 Korean League Cup.
Fixtures and Results at FC Seoul Official Website
| K League | League Cup | FA Cup | AFC Champions League | Total | Notes | |
|---|---|---|---|---|---|---|
| 1 |  Park Chu-Young (12) | Park Chu-Young (6) | Kim Eun-Jung (1) Han Dong-Won (1) Jung Jo-Gook (1) | Did not qualify | Park Chu-Young (18) | |
| 2 | Kim Eun-Jung (7) |  Nonato (5) | N/A | Kim Eun-Jung (8) | ||
| 3 | Jung Jo-Gook (3) | Ricardo (3) | N/A | Nonato (7) | ||
| 4 | Kim Dong-Jin (3) | Lee Won-Shik (1) | No scorer | Ricardo (4) Jung Jo-Gook (4) | ||
| 5 | Nonato (2) | Han Tae-You (1) | N/A | |||
| K League | League Cup | Total | Notes | |
|---|---|---|---|---|
| 1 | Ricardo (9) | Ricardo (5) | Ricardo (14) | |
| 2 | Park Chu-Young (3) | Kim Eun-Jung (4) | Kim Eun-Jung (7) | |
| 3 | Kim Eun-Jung (3) | Kim Chi-Gon (1) | Park Chu-Young (4) | |
| 4 | Kim Seung-Yong (2) | Jung Jo-Gook (1) | Kim Seung-Yong (2) | |
| 5 | Lee Ki-Hyung (1) | Park Chu-Young (1) | Kim Chi-Gon (2) | |
| Position | Name | Period | Notes |
|---|---|---|---|
| Manager | Lee Jang-Soo | ||
| Assistant manager | |||
| First-team coach | |||
| 2005/05/02–2005/12/31 | Player Retired (1 May 2005) | ||
| Player Coach | 2005/01/01–2005/05/01 | 0 caps in K-League | |
| Reserve Team Manager | Choi Ki-Bong | ||
| Reserve Team Coach | Son Hyun-Jun | ||
| Goalkeeping coach | Leandro | ||
| Fitness coach | Flavio | ||
| Technical director & Chief Scout | Kim Sung-Nam | ||
All players registered for the 2005 season are listed.
(Out)(Conscripted)(Conscripted)(Conscripted)(Conscripted)(Conscripted)
This section shows the most used players for each position considering a 3-5-2 formation.