Miss Atsuki Matsuzawa from Mahidolvithayanusorn school, Nakhon Pathom Province received a gold medal while Miss Apisada Somjai, and Mr. Poompat Laohavirojana from the same Mahidolvithyanusorn school received silver medal each, and Mr. Krittin Venunan from Trianudomsuksa school, Bangkok received a bronze medal at the 30^th International Biology Olympiad, held in Szeged, the Republic of Hungary during 14-21 July 2019.