| Tourney Name: | A3 Champions Cup |
| Year: | 2005 |
| Other Titles: | A3 Nissan Champions Cup 2005 |
| Country: | South Korea |
| Dates: | 13 – 19 February |
| Confederations: | 1 |
| Num Teams: | 4 |
| Venues: | 1 |
| Cities: | 1 |
| Count: | 1 |
| Matches: | 6 |
| Goals: | 18 |
| Top Scorer: |  Nádson (6 goals) (Suwon Bluewings) |
| Player: | Nádson (Suwon Bluewings) |
| Prevseason: | 2004 |
| Nextseason: | 2006 |
The 2005 A3 Champions Cup was third edition of A3 Champions Cup. It was held from February 13 to 19, 2003 in Seogwipo, South Korea.
Suwon Samsung Bluewings – 2004 K-League Champions Pohang Steelers – 2004 K-League Runners-up
Shenzhen Jianlibao – 2004 Chinese Super League Champions
Yokohama F. Marinos – 2004 J. League ChampionsAll times are Korea Standard Time (KST) – UTC+9--------------------