Some of the University's better-known students include: Christian Doppler, Kurt Adler, Franz Alt, Bruno Bettelheim, Rudolf Bing, Lucian Blaga, Josef Breuer, F. F. Bruce, Elias Canetti, Ivan Cankar, Otto Maria Carpeaux, Felix Ehrenhaft, Mihai Eminescu, Paul Feyerabend, Heinz Fischer, O. W. Fischer, Ivan Franko, Sigmund Freud, Alcide De Gasperi, Ernst Gombrich, Kurt Gödel, Erich Göstl, Franz Grillparzer, Jörg Haider, Edmund Husserl, Hugo von Hofmannsthal, Marie Jahoda, Elfriede Jelinek, Percy Lavon Julian, Karl Kautsky, Elisabeth Kehrer, Hans Kelsen, Rudolf Kirchschläger, Arthur Koestler, Jernej Kopitar, Karl Kordesch, Karl Kraus, Bruno Kreisky, Richard Kuhn, Paul Lazarsfeld, Gustav Mahler, Tomáš Garrigue Masaryk, Lise Meitner, Gregor Mendel, Franz Mesmer, Franc Miklošič, Alois Mock, Matija Murko, Pope Pius III, Maxim Podoprigora, Hans Popper, Karl Popper, Otto Preminger, Wilhelm Reich, Peter Safar, Mordkhe Schaechter, Arthur Schnitzler, Albin Schram, Wolfgang Schüssel, Joseph Schumpeter, Theodor Herzl, John J. Shea, Jr., Adalbert Stifter, Yemima Tchernovitz-Avidar, Kurt Waldheim, Otto Weininger, Stefan Zweig, and Huldrych Zwingli.

* Árpád Doppler ( 1857 – 1927 ), Hungarian composer, son of Karl Doppler

* Franz Doppler ( 1821 – 1883 ), composer, brother of Karl Doppler

He was born in Budapest, the son of Karl Doppler and he studied at the Conservatory of Stuttgart.

* Karl Bernhard of Saxe Weimar Eisenach, Travels through North America, during the Years 1825 and 1826 2 vols.

Karl was born in 1818 and baptized in 1824, but his mother, Henriette, did not convert until 1825, when Karl was seven.

* April 26 – Karl Möbius, German ecologist ( born 1825 )

In 1825, Karl Hoeck used the name Das Minoische Kretas for Volume II of his major work, Kreta.

* Karl Wilhelm Dindorf, 1825, Stephanus Byzantinus.

* Karl Friedrich Gauss, General Investigations of Curved Surfaces of 1827 and 1825, ( 1902 ) The Princeton University Library.

* Karl Friedrich Gauss, General Investigations of Curved Surfaces of 1827 and 1825, The Project Gutenberg EBook of General Investigations of Curved Surfaces of 1827 and 1825, by Karl Friedrich Gauss

Friedrich Karl Theodor Zarncke ( 7 July 1825 – 15 October 1891 ), German philologist, was born at Zahrensdorf, Mecklenburg-Schwerin, the son of a country pastor.

* Karl Wilhelm Salice-Contessa ( 1777 – 1825 ), poet

* Karl Möbius ( 1825 – 1908 ), German zoologist and ecologist

* 1825: Nova plantarum genera and species written with Alexander von Humboldt and Karl Sigismund Kunth, Volume 7, Lutetiae Parisiorum, Paris. Version numérique sur le site Botanicus.

Karl Theodor Keim ( December 17, 1825 – November 17, 1878 ) was a German Protestant theologian.

It is believed to be an English adaptation of the German word Urning, which was first published by activist Karl Heinrich Ulrichs ( 1825 – 95 ) in a series of five booklets ( 1864 – 65 ) which were collected under the title Forschungen über das Räthsel der mannmännlichen Liebe (" Research into the Riddle of Man-Male Love ").

The projection was first published by mathematician and astronomer Karl ( or Carl ) Brandan Mollweide ( 1774 – 1825 ) of Leipzig in 1805.

Karl Christian Johann Holsten ( March 31, 1825 – January 26, 1897 ) was a German theologian.

# Karl Wilhelm of Knebel ( b. Templin, 18 January 1796-d. Jena, 16 November 1861 ), married firstly on 6 February 1825 to Fredericka of Geusau, with whom he had one son, who died in infancy, before they divorced in 1837 ; secondly he married on 14 May 1839 Josephine Karoline Emilie Trautmann, with whom he had one son and two daughters.

* Karl August Mobius ( 1825 – 1908 ), German zoologist

The first use of this term is usually attributed to Karl Möbius in 1877, but already in 1825, the French naturalist Adolphe Dureau de la Malle used the term societé about an assemblage of plant individuals of different species.

Karl August Möbius ( 7 February 1825 in Eilenburg – 26 April 1908 in Berlin ) was a German zoologist who was a pioneer in the field of ecology and a former director of the Museum für Naturkunde in Berlin.

In 1816 he afforded a home to his friend Karl Wilhelm Salice-Contessa ( 1777 – 1825 ), himself a poet, who had met with serious reverses of fortune ; Contessa lived with Houwald, assisting and stimulating him in his literary work, for eight years.

* 1841 – Karl Binding, German jurist ( d. 1920 )

* 1881 – Karl Staaf, Swedish athlete ( d. 1953 )

* 1970 – Karl Unterkircher, Italian mountaineer ( d. 2008 )

* 1982 – Karl Davies, English actor

* 1905 – Karl Amadeus Hartmann, German composer ( d. 1963 )

Eastern European theorists include Pyotr Stolypin ( 1862 – 1911 ) and Alexander Chayanov ( 1888 – 1939 ) in Russia ; Adolph Wagner ( 1835 – 1917 ), and Karl Oldenberg in Germany, and Bolesław Limanowski ( 1835 – 1935 ) in Poland.

* 1891 – Karl Kobelt, Swiss politician ( d. 1968 )

* 1975 – Karl Yune, American actor

* 1945 – World War II – Fuehrerbunker: Adolf Hitler marries his longtime partner Eva Braun in a Berlin bunker and designates Admiral Karl Dönitz as his successor.

* 1966 – Karl Petter Løken, Norwegian footballer

* 1903 – German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.

* 1826 – Karl Gegenbaur, German anatomist ( d. 1903 )

* 1741 – Karl Friedrich Bahrdt, German theologian ( d. 1792 )

* 1963 – Karl Beattie, English director and producer

* 1894 – Karl Böhm, Austrian conductor ( d. 1981 )

* 1873 – Austrian explorers Julius von Payer and Karl Weyprecht discover the archipelago of Franz Joseph Land in the Arctic Sea.

* 1771 – Karl Philipp Fürst zu Schwarzenberg, Austrian field marshal ( d. 1820 )

* 1979 – Karl Wolf, Lebanese-Canadian singer-songwriter, musician, and producer ( Sky )

* 1985 – Karl Reindler, Australian race car driver

* 1945 – Adolf Hitler's designated successor Hermann Göring sends him a telegram asking permission to take leadership of the Third Reich, which causes Hitler to replace him with Joseph Goebbels and Karl Dönitz.

* 1918 – Karl Ferdinand Braun, German physicist, Nobel Prize laureate ( b. 1850 )