Milan S. Dimitrijevic (1947) is a retired (2012) astronomer of the Astronomical Observatory in Belgrade. Previous roles were: Director of Belgrade Astronomical Observatory (1994-2002). Editor-in-Chief of the ''Serbian Astronomical Journal'' and of Publications of the Astronomical Observatory of Belgrade (1987-2002). President of the Astronomical Society ''Rudjer Boskovic'' 1982-2004. Editor-in-Chief of the journal “Vasiona (Universe)” (1985-2004), and from 2018, President of the Society of Astronomers of Serbia (2008-2014). Federal Minister for Science, Technology, and Development 1993-94. Member of the Association of Writers of Serbia (2008). Member of the Governing Board of Euro-Asian Astronomical Society. Member of the Council of European Astronomical Society (2008-2012). Since 2009, Affiliated Fellow of the Paris Observatory in LERMA. Taught the following in the Faculty of Mathematics in Belgrade at postgraduate or doctoral level: "Astronomical Spectroscopy" and "Effects of collisions with charged particles at astrophysical plasma spectra". In European AstroMundus master studies in astronomy, taught "Spectral Line Shapes in Astrophysics". Author of ~ 350 papers in international scientific journals, and of more than ten books. Main scientific interests: Stark broadening, line profiles, line broadening, astronomical spectroscopy, atomic and molecular collision processes in stellar atmospheres, astroinformatics, history and philosophy of astrononomy, astronomy in culture.