2005 ASEAN Club Championship
This year, Tampines Rovers FC from Singapore won the championship. The champions of Liga Indonesia apparently did not enter due to a congested fixture list. The champions of Laos and the champions of Philippines presumably renounced on participation for financial reasons.
Qualified teams
| Team | Qualification |
 Pahang FA | Super League Malaysia 2004 champions |
 Hoang Anh Gia Lai | 2004 V-League champions |
 FC Zebra | 2004 Super Liga champions |
 Nagacorp | 2004 Cambodian League champions |
 Tampines Rovers | 2004 S.League champions |
 DPMM FC | 2004 Brunei Premier League champions & host team |
 Finance and Revenue | 2004 Myanmar Premier League champions |
 Thailand Tobacco Monopoly | 2004–05 Thai League champions |
Group stage
- Matchday dates are: 22–31 July 2005
- Group winners and runners-up qualify for semi-finals
Group A
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Group B
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Knockout stage
Semi finals
3rd Place Playoff
None, DPMM and Hoàng Anh Gia Lai are joint third-placers.Finals
Top scorers
| Player | Club | Goals |
 Bernard Tchoutang | Pahang FA | 7 |
| Nguyen Dinh Viet | Hoang Anh Gia Lai | 7 |
| Mirko Grabovac | Tampines Rovers | 4 |
| Kyaw Thu Ra | Finance and Revenue | 4 |
| Indra Putra Mahayuddin | Pahang FA | 3 |
| Nguyen Van Dan | Hoang Anh Gia Lai | 3 |
 Anderson | Thailand Tobacco Monopoly | 3 |
| Mustafic Fahrudin | Tampines Rovers | 2 |
| Mohd Noh Alam Shah | Tampines Rovers | 2 |
| Shahrulnizam Sahat | Pahang FA | 2 |
| Hairuddin Omar | Pahang FA | 2 |
| Rosdi Talib | Pahang FA | 2 |
| Dusit Chalermsan | Hoang Anh Gia Lai | 2 |
| Kiatisuk Senamuang | Hoang Anh Gia Lai | 2 |
 Goran Vujanovic | DPMM FC | 2 |
| Jaime Victor da Costa Filipe | FC Zebra | 2 |
 Sead Muratovic | Tampines Rovers | 1 |
| Santi Chaiyaphuak | Tampines Rovers | 1 |
| Irwan Fadly Idrus | Pahang FA | 1 |
| Jalaluddin Jaafar | Pahang FA | 1 |
| Vimon Jancam | Hoang Anh Gia Lai | 1 |
| Chu Ngoc Canh | Hoang Anh Gia Lai | 1 |
| Nguyen Van Kiet | Hoang Anh Gia Lai | 1 |
| Tran Minh Thien | Hoang Anh Gia Lai | 1 |
| Duong Minh Ninh | Hoang Anh Gia Lai | 1 |
| Mohd Saiful Rizal Awang | DPMM FC | 1 |
| Rosmin Kamis | DPMM FC | 1 |
| Jose Joao Pereira | FC Zebra | 1 |
| Demofilho Marques | FC Zebra | 1 |
| Sakda Kaewboonmee | Thailand Tobacco Monopoly | 1 |
| Michael Thach Nen | Nagacorp | 1 |