On a basis of documents, archive materials and publications an account of G. M. Dobrov's international activities in science & technology is given. His expert activities in UNESCO, CMEA (Council for Mutual Economic Cooperation), standing commissions on science & technology cooperation as well as his participation in international scientific organizations, projects, symposia, congresses and conferences are shown. Apart from this, the 1976-1979 G.M. Dobrov business mission to Austria, and his work in the International Institute for Systemic Analysis are described. Detailed information is also given on his supervision of the Ukrainian working group in the UNESCO project 'International Comparative Study of Organization and Activities of Research Teams'. As far as other international contributions of G. M. Dobrov are concerned, his participation in international activities devoted to science & technology forecasting, performance of research personnel and institutes for industrial research, international congresses of science & technology historians, international sociological congresses, editorial work in the international journal 'Scientometrics' are mentioned as well.