Mr. Jirayus Jinapong from Kamnerdvith school, Rayong Province, Mr. Pitchayut Saengrungkongka from Krungthepchristian school, Bangkok and Mr. Papon Lapate from Mahidolvithayanusorn school, Nakhom Pathom Province received gold medal each whilst Mr. Paramuth Samuthrsindh from Triamudomsuksa school, Bangkok, Mr. Natanon Therdpraisan from Krungtepchristian school, Bangkok, and Mr. Thana Somsirivattana from Suankularb school, Bangkok received silver medal each at the 60^th International Mathematical Olympiad, held in Bath, the United Kingdom during 14-22 July 2019.