A list of great names among the Viennese of late 19C / early 20C, by Hoppe:

Ludwig Boltzmann, Franz Brentano, Rudolph Camap, Edmund Husserl, Ernst Mach, Alexius Meinong, Karl Popper, Moritz Schlick, and Ludwig Wittgenstein among philosophers;

Kurt Godel, Hans Hahn, Karl Menger, and Richard von Mises among mathematicians;

Eugen von Bohm-Bawerk, Gottfried von Haberler, Friedrich A. von Hayek, Carl Menger, Fritz Machlup, Ludwig von Mises, Oskar Morgenstern, Joseph Schumpeter, and Friedrich von Wieser among economists;

Rudolph von Jhering, Hans Kelsen, Anton Menger, and Lorenz von Stein among lawyers and legal theorists;

Alfred Adler, Joseph Breuer, Karl Buhler, and Sigmund Freud among psychologists;

Max Adler, Otto Bauer, Egon Friedell, Heinrich Friedjung, Paul Lazarsfeld, Gustav Ratzenhofer, and Alfred Schutz among historians and sociologists;

Hermann Broch, Franz Grillparzer, Hugo von Hofmannsthal, Karl Kraus, Fritz Mauthner, Robert Musil, Arthur Schnitzler, Georg Trakl, Otto Weininger, and Stefan Zweig among writers and literary critics;

Gustav Klimt, Oskar Kokoschka, Adolf Loos, and Egon Schiele among artists and architects;

and Alban Berg, Johannes Brahms, Anton Bruckner, Franz Lehar, Gustav Mahler, Arnold Schonberg, Johann Strauss, Anton von Webem, and Hugo Wolf among composers.