Calendar
1st qualifying round
2nd qualifying round
, colspan="3" style="background-color:#99CCCC", 3 April 2013 , - , - , - , - , - , - , - , - , - , - , - , - : 1 Samut Sakhon Boorana won because Phayao withdrew : 2 Lampang won because Pluak Daeng withdrewFirst round
, colspan="3" style="background-color:#99CCCC", 10 April 2013 , - , - , - , - , - , - , - , - , - : 1 Nara United won because Samut Sakorn Boorana refused to travel to the deep south and therefore forfeited the tie : 2 Phattalung won because Mukdahan withdrewSecond round
Third round
: 1 Bangkok won because Sisaket was suspended : 2 Match was abandoned at 45' (1–0) due to floodlight failure; completed on June 27Fourth round
Quarterfinals
Semifinals
Final
{{Thai FA Cup seasons Thai FA Cup seasons 1