|Organising body||Football Association of Thailand|
|Domestic cup(s)||Thai FA Cup|
Khor Royal Cup (Thai: ถ้วยพระราชทาน ค.; ถ้วย ค.) is the fifth-highest level of club football competition which competed in the tournament in Thailand since 1963. It was founded by Football Association of Thailand along with Ngor Royal Cup in 1963. Department of Physical Education was the first team to win this competition.
In 1996, Khor Royal Cup was downgraded to be the fourth-tier football tournament of Thai club football competition when Football Association of Thailand founded Thai Division 1 League as the second-tier in its place. Finally, in 2006, the tournament was downgraded to be the fifth-tier tournament due to the proposed merger of the Provincial League and Thai Premier League into one entity.
In 2016, Khor Royal Cup was combined to Regional League Division 3 completely along with Khǒr Royal Cup and Ngor Royal Cup by Football Association of Thailand and then Khor Royal Cup become a trophy for Regional League Division 2.
The clubs which are still in the division and the best eight clubs from the previous edition of Ngor Royal Cup join the tournament. The first round is group stage, and the clubs will be divided into a group of 3 or 4 clubs. The winners and the runners-up of each groups qualify to the knock-out stage. Only the best four or the semi-finalist clubs of the tournament promote to Khǒr Royal Cup next season while the clubs which withdraw themselves from the tournament will be relegated to Ngor Royal Cup next season.
List of winners
|2015||Pichayakasem Technological College||2-1||King Mongkut's University of Technology North Bangkok||Wang Sapung Municipality
Chaichimplee Alumni Association
|2014-15||Pak Chong School Alumni Association||3-0||Royal Irrigation Department||Wongchawalitkul University Alumni Association|
|2013-141||Ruam Namjai Foundation - Bang Na||2-1||Nakhon Ratchasima Sport School||Sena Municipality
Bang Muang Municipality
|2012||Hakka Association of Thailand||0-0(4-5)p||Prathueangthip Witthaya School||Hua Hin Municipality
Nawama Rachanusorn School
|2011||Rajapruek College||2-1||Thong Lor||Daisin Group Employee Association
Air and Coastal Defense Command
|2010||Globlex Realty Staff Association||Unknown||Unknown|
|2008-09||J.W. Group||2-1||Bangkok Glass Sport Association||Kukot Municipality|
|2007-08||Baan Thung Ket School||3-1||Rangsit University||Chandhabhing F.A.|
|2006||Debsirin Alumni Association||2-1||Thavorn Farm|
|2004||Eastern Asia University|
|2003||Thepsatri Rajabhat University Lopburi|
|2002||Thai Honda - Central|
|2001||Debsirin Alumni School|
|2000||Royal Thai Customs|
|1998||Bangkok Christian College|
|1997||Kurusapa Business Organization|
|1996||Thai Military Bank|
|1995||The Crown Property Bureau|
|1994||Bangkok Bank of Commerce|
|1993||Association of Stock Exchange|
|1992||Royal Thai Army|
|1991||Royal Thai Army||Bangkok University|
|1990||Royal Thai Air Force|
|1989||Royal Thai Navy|
|1988||Royal Thai Army|
|1987||Royal Thai Air Force|
|1986||Royal Thai Air Force|
|1985||Royal Thai Air Force|
|1983||Royal Thai Air Force|
|1982||Royal Thai Army|
|1981||Metropolitan Waterworks Authority|
|1980||Port Authority of Thailand - Thamrong Thai F.A.|
|1978||Port Authority of Thailand|
|1977||Port Authority of Thailand|
|1976||Royal Turf Club of Thailand|
|1975||Teacher's college of Mahasarakham|
|1974||Port Authority of Thailand|
|1973||Royal Thai Air Force - Lions Chonburi|
|1971||Royal Thai Air Force|
|1970||Royal Thai Air Force|
|1969||Port Authority of Thailand|
|1968||Hakka Association of Thailand|
|1967||Hakka Association of Thailand|
|1966||Royal Thai Air Force|
|1964||Baan Somdet Chao Phraya Alumni Association|
|1963||Baan Somdet Chao Phraya Alumni Association|
|1962||Department of Physical Education|
Note: 1. 2013-14 Khor Royal Cup was delayed due to 2013–14 Thai political crisis.
- "ฟุตบอลถ้วยพระราชทาน ค".
- "วิทยาลัยเทคโนโลยีพิชญเกษมผงาดคว้าแชมป์บอลถ้วย ค". www.siamsport.co.th. Retrieved 2016-02-15.
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- "แชมป์ถ้วย ค". www.thairath.co.th. Retrieved 2016-02-15.
- "สโมสรฟุตบอล บางกอก ยูไนเต็ด". www.ballthai.in.th. Retrieved 2016-02-29.