| Thai FA Cup | |
| Year: | 2011 |
| Country: | Thailand |
| Dates: | 20 April 2011-11 January 2012 |
| Champions: | Buriram PEA |
| Count: | 1 |
| Runner-Up: | Muangthong United |
| Matches: | 74 |
| Top Goal Scorer: | Manop Sornkaew 6 goals |
| Prevseason: | 2010 |
| Nextseason: | 2012 |
The Thai FA Cup 2011 (Thai: มูลนิธิไทยคม เอฟเอคัพ) is the 18th season of Thailand knockout football competition. The tournament is organized by the Football Association of Thailand.
The cup winner were guaranteed a place in the 2012 AFC Champions League.
| Round | Date | Matches | width=100 | Clubs ! | New entries this round |
|---|---|---|---|---|---|
| Qualifying round | 20 April 2011 | 4 | 4 → 2 | 4 | |
| First round | 20 April 2011 27 April 2011 11 May 2011 25 May 2011 | 2 + 36 | 2 + 36 → 19 | 36 | |
| Second round | 8 June 2011 15 June 2011 22 June 2011 | 19 + 17 | 19 + 17 → 18 | 17 | |
| Third round | 9 July 2011 10 July 2011 16 July 2011 17 July 2011 20 July 2011 27 July 2011 17 August 2011 16 October 2011 | 18 + 18 | 18 + 18 → 4 to Fourth Round and 14 to Fifth Round | 18 | |
| Fourth round | 4 September 2011 26 October 2011 | 4 | 4 → 2 | ||
| Fifth round | 27 August 2011 28 August 2011 31 August 2011 19 October 2011 26 October 2011 | 2 + 14 | 2 + 14 → 8 | ||
| Quarter-finals | 4 January 2012 | 8 | 8 → 4 | ||
| Semi-finals | 7 January 2012 | 4 | 4 → 2 | ||
| Final | 11 January 2012 | 2 | 2 → 1 |
|colspan="3" style="background-color:#99CCCC"|20 April 2011Prachinburi won because Sananrak Municipality disqualified
|colspan="3" style="background-color:#99CCCC"|20 April 2011|-|colspan="3" style="background-color:#99CCCC"|27 April 2011|-|colspan="3" style="background-color:#99CCCC"|11 May 2011|-|colspan="3" style="background-color:#99CCCC"|25 May 2011
1 Ratchaburi won because Mukdahan City withdrew
|colspan="3" style="background-color:#99CCCC"|8 June 2011|-|colspan="3" style="background-color:#99CCCC"|15 June 2011|-|colspan="3" style="background-color:#99CCCC"|22 June 2011
2 Songkhla won because Yasothon United withdrew
3 Thai Honda withdrew before lots of Second round.
|colspan="3" style="background-color:#99CCCC"|9 July 2011|-|colspan="3" style="background-color:#99CCCC"|10 July 2011|-|colspan="3" style="background-color:#99CCCC"|16 July 2011|-|colspan="3" style="background-color:#99CCCC"|17 July 2011|-|colspan="3" style="background-color:#99CCCC"|20 July 2011|-|colspan="3" style="background-color:#99CCCC"|27 July 2011|-|colspan="3" style="background-color:#99CCCC"|17 August 2011|-|colspan="3" style="background-color:#99CCCC"|19 October 2011
4 (C) is Champion in last season.
5 (RC) is Runner-up in last season.
|colspan="3" style="background-color:#99CCCC"|4 September 2011|-|colspan="3" style="background-color:#99CCCC"|26 October 2011|-|}
|colspan="3" style="background-color:#99CCCC"|27 August 2011|-|colspan="3" style="background-color:#99CCCC"|28 August 2011|-|colspan="3" style="background-color:#99CCCC"|31 August 2011|-|colspan="3" style="background-color:#99CCCC"|19 October 2011|-|colspan="3" style="background-color:#99CCCC"|26 October 2011|-|colspan="3" style="background-color:#99CCCC"|30 November 2011|-|}
1 Police United failed to turn up for their game.
|colspan="3" style="background-color:#99CCCC"|4 January 2012|-|colspan="3" style="background-color:#99CCCC"|5 January 2012∗∗The original schedule was January 4 but postponed due to weather condition (heavy rain).
|colspan="3" style="background-color:#99CCCC"|7 January 2012
See main article: article and 2011 Thai FA Cup Final. |colspan="3" style="background-color:#99CCCC"|11 January 2012