The 2006 Thai Premier League had 12 teams. No clubs would be relegated as the league would be expanded to 16 teams for the 2007 season. Two teams promoted from the rival Pro League and two clubs from Thailand Division 1 League. The official name of the league at this time was Thailand Premier League.

Member clubs

Final league table

Season notes

Kor Royal Cup

The Kor Royal Cup was an end of season match between the two clubs that finished first and second in the final Premier League standings. Osotsapa, who came second in the Premier League, beat league Champions Bangkok University 2-1.

Queen's Cup

2nd Level Royal Thai Navy upset the odds when they won the 32nd edition of the Queen's Cup defeating Krung Thai Bank 1-0.

Asian representation

Annual awards

Coach of the Year

Player of the year

Top scorer

Champions

The league champion was Bangkok University. It was the team's first title.