Dr. Than Tun became a lecturer in University of Rangoon’s Department of History and Political Science in 1959. In 1965, he was promoted to the Professor and Head of Department in History at University of Mandalay. Professor Than Tun left Mandalay in 1982 for University of Kyoto’s Center for South East Asian Studies where he was a Research Fellow and Visiting Professor from 1982 to 1987. Later, he was a visiting professor in Northern Illinois University where he was awarded an Honorary Doctorate of Literature in 1988. From 1989 to 1990, he was a visiting scholar at the University of Michigan. In 1990 he came back to Burma and worked as a Member of the Myanmar (Burmese) Historical Commission and Emeritus Professor in University of Yangon in the Departments of History and Archeology.