The 39th King's Cup finals was held from 21 to 23 January 2009 at the Surakul Stadium in Phuket, Thailand. The King's Cup (คิงส์คัพ) is an annual football tournament; the first tournament was played in 1968.
This edition of the tournament was due to be played at the end of the domestic football season, the Thailand Premier League in October, but was postponed until early 2009 after the Thai national team made other commitments.
The format of this tournament had also changed from the previous edition, to a knockout basis, starting from the semi-finals, instead of a round robin group stage.