2003–04 Thai League
| Season | 2003–04 |
|---|---|
| Dates | 27 December 2003 – 11 August 2004 |
| Champions | Krung Thai Bank |
| Relegated | Royal Thai Air Force Sinthana |
| 2005 AFC Champions League | Krung Thai Bank FC BEC Tero Sasana FC |
| 2005 ASEAN Club Championship | Thailand Tobacco Monopoly FC |
| Top goalscorer | Vimon Jancam (Osotsapa) (14) |
| Biggest home win | Krung Thai Bank 6-1 Sinthana Osotsapa 5-0 Sinthana |
| Biggest away win | Royal Thai Air Force 0-5 Bangkok Bank |
| Highest scoring | Port Authority of Thailand 5-4 Osotsapa (9 goals) |
← 2002-03 2004-05 → | |
The 2003–04 Thai Premier League had 10 teams. Two clubs would be relegated and 2 teams promoted from Thailand Division 1 League. The team that finished in 8th position would play in a relegation play-off.