| Season: | 2004 |
| Chrtitle: | Chairman |
| League Result: | 5th |
| Cup1 Result: | Round of 16 |
| Cup2 Result: | 12th |
| League Topscorer: | Kim Eun-jung (8) |
| Season Topscorer: | Jung Jo-gook (13) |
| Highest Attendance: | 47,928 vs Busan (League, 3 April) |
| Lowest Attendance: | 2,452 vs Incheon (League, 6 October) |
| Average Attendance: | 15,363 |
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| Nextseason: | 2005 |
See main article: 2004 Korean FA Cup.
See main article: 2004 Korean League Cup.
Fixtures and Results at FC Seoul Official Website
| K League | League Cup | FA Cup | AFC Champions League | Total | Notes | |
|---|---|---|---|---|---|---|
| 1 |  Kim Eun-Jung (8) | Jung Jo-Gook (6) | Jung Jo-Gook (5) Wang Jung-Hyun (5) | Did not qualify | Jung Jo-Gook (13) | |
| 2 | Kim Dong-Jin (3) |  Fumagalli (2) | N/A | Kim Eun-Jung (8) | ||
| 3 | Jung Jo-Gook (2) | Wang Jung-Hyun (2) | Lee Ji-Nam (2) | Wang Jung-Hyun (7) | ||
| 4 | Lee Won-Shik (1) | Santana (1) | No scorer | Kim Dong-Jin (3) | ||
| 5 | Santana (1) | No scorer | Lee Ji-Nam (2) | |||
| K League | League Cup | Total | Notes | |
|---|---|---|---|---|
| 1 | Kim Dong-Jin (2) | Kim Seung-Yong (2) | Kim Seung-Yong (2) | |
| 2 | Choi Won-Kwon (2) | Lee Won-Shik (1) | Kim Dong-Jin (2) | |
| 3 | Park Jung-Suk (2) | Han Sang-Gu (1) | Choi Won-Kwon (2) | |
| 4 | Kim Eun-Jung (2) | Jung Jo-Gook (1) | Park Jung-Suk (2) | |
| 5 | Kim Seong-Jae (1) | No assistor | Kim Eun-Jung (2) | |
| Position | Name | Period | Notes |
|---|---|---|---|
| Manager | Cho Kwang-Rae | ||
| Assistant manager | Ivo | ||
| First-team coach | Lee Young-jin | ||
| Player Coach | 7 caps in K-League | ||
| Reserve Team Manager | Kim Kwui-Hwa | ||
| Reserve Team Coach | Son Hyun-Jun | ||
| Goalkeeping coach | Antonio | 5 January 2004 – 4 March 2004 | 3 months contract |
| Leandro | |||
| Fitness coach | Wanderley | ||
| Chief scout | Kang Chun-Ho | ||
All players registered for the 2004 season are listed.
(Out)(Out)(In)(Conscripted)(Out)(Conscripted)(Out)(Conscripted)(Out)
This section shows the most used players for each position considering a 3-4-3 formation.