1998 saw the 14th edition of the Yamaha Thailand Cup.
It was Thailand's main inter-provincial competition, played between qualifiers from various regions.
The first round saw four groups of four teams, of which the top two sides qualified for the Quarter-Final knockout stage.
Bangkok Metropolitan Administration FC beat Nakhon Si Thammarat FC in the final.
Group A
Bangkok Metropolitan Administration FC Phatthalung Amnat Charoen Pathum Tani
Results
Bangkok Metropolitan Administration FC and Amnat Charoen advance to Quarter-Final stage.
Group B
Phetchaburi Pichit Nakhon Sri Thammarat FC Ubon Ratchathani
Results
Nakhon Si Thammarat FC and Phetchaburi advanced to the next round
Group C
Ayutthaya Si Saket FC Phitsanulok FC Sa Kaeo
Results
Ayutthaya and Phitsanulok FC advanced to the next round
Group D
Tak Lopburi FC Samut Songkhram FC Ranong
External links Official Website Football Association of Thailand Thailand Premier League FIFA Thailand - List of Champions RSSSF