Dr.Leopold Robert Director, Science Division 1914-1925
Maj-General Phya Damrong Baedyagun, Director (acting) Science Division 1925-1932
Colonel Phra Charan Rokvicharn Director, Science Division 1932-1940
Lt-Colonel Luang Kierti Nandabaedya Director, Science Division 1940-1945
Dr.Chaloem Puranananda Director, Science Division 1945-1970
Dr.Sriprapai Phong-Aksara Director, Science Division 1970 - 1978
Dr.Skon Rohitayodhin D.V.M.,M.S. Director, Science Division 1979-1983
Dr.Abha Singhaseni Director, Science Division 1983-1984
Prof.Dr.Supawat Chutivongse Director, Science Division 1984-1992
Prof. Visith Sitprija Director, Queen Saovabha Memorial Institute 1992 - at present
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