27 Dec 2003 – 11 Aug 2004
| Krung Thai Bank|
Krung Thai Bank F.C.
2004–05 Thai League
| Krung Thai Bank FC
BEC Tero Sasana FC|
Thailand Tobacco Monopoly FC
Vimon Jancam (Osotsapa) (14)
Krung Thai Bank 6-1
Osotsapa 5-0 Sinthana
Air Force Central F.C., BBCU F.C.
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.
Bangkok University (promoted from Division 1)
BEC Tero Sasana
Krung Thai Bank
Port Authority of Thailand
Royal Thai Air Force
Royal Thai Navy (promoted from Division 1)
Thailand Tobacco Monopoly
Rules for classification: 1st points; 2nd head-to-head; 3rd goal difference; 4th goals scored
2003–04 Thai League Wikipedia
Osotsapa FC again won the Queen's Cup. This was their third success in a row.Again in another revamped and expanded Asian Champions League, last years runners up BEC Tero Sasana met their match and came bottom of a tough group comprising sides from China, South Korea and Japan. Krung Thai Bank also entered this year and came in second place in their group, although still not good enough to qualify for the knockout stages.
Worrawoot Dangsamer - Krung Thai Bank
Pichitphong Choeichiu - Krung Thai Bank
Vimol Jankam - 14 Goals Osotsapa M 150
The league champion was Krung Thai Bank. It was the second time the team won the title.