Ritter is the second lowest-ranking title of nobility in German-speaking areas, just above an Edler, considered roughly equal to the title Knight or Baronet.
This list includes only those whose main Wikipedia article includes the titular 'Ritter' in the article name. There are many others whose name could include the title but whose main entry is at the non-titular version of the name.
People whose names include the title Ritter:
Hans Ritter von Adam (1886–1917), German flying ace in World War I
Rudolf Ritter von Alt (1812–1905), Austrian landscape and architectural painter
Carl Ferdinand Ritter von Arlt (1812–1887), Austrian ophthalmologist
Joseph Calasanza von Arneth (1791–1863), Austrian numismatist and archaeologist
Alfred Ritter von Arneth (1819–1897), Austrian historian
Ludwig August Ritter von Benedek (1804–1881), Austrian general, commander at the Battle of Königgrätz
Jakob Ritter von Danner (1865–1942), Bavarian general, put down the Beer Hall Putsch
Leopold Ritter von Dittel (1815–1898), Austrian urologist
Franz Ritter von Epp (1868–1946), officer in the Imperial German Army, early member of the Nazi party
Paul Johann Anselm Ritter von Feuerbach (1775–1833), German legal scholar
Georg Ritter von Frauenfeld (1807–1873), Austrian naturalist
Friedrich Ritter von Friedländer-Malheim (1825–1901), Bohemian-Austrian painter
Carl Ritter von Ghega (1802–1860), Albania-Italian engineer
Robert Ritter von Greim (1892–1945), German field marshal during World War II
Wilhelm Karl Ritter von Haidinger (1795–1871), Austrian mineralogist, geologist, and physicist
Franz Ritter von Hauer (1822–1899), Austrian geologist
Ferdinand Ritter von Hebra (1816–1880), Austrian physician and dermatologist
Gustav Ritter von Kahr (1862–1934), German conservative politician in Bavaria
Ludwig Ritter von Köchel (1800–1877), Austrian musicologist, catalogued the works of Mozart (K numbers)
Karl Heinrich Lang, Ritter von Lang (1764–1835), German historian and statesman
Wilhelm Ritter von Leeb (1876–1956), German field marshal during World War II
Karl Gottfried Ritter von Leitner (1800–1890), German author, editor, and publicist
Johann Ritter von Oppolzer (1808–1871), Austrian physician
Georg Ritter von Schönerer (1842–1921), Austrian politician
Carl Franz Anton Ritter von Schreibers (1775–1852), Austrian naturalist
Lorenz Ritter von Stransky (1889–1923), German engineer and early member of the Nazi Party
Wilhelm Ritter von Thoma (1891–1948), German officer who served in World War I, the Spanish Civil War, and World War II
Georg Ludwig von Trapp (1880–1947), Austrian naval officer, headed the singing family immortalized in The Sound of Music
Heinrich Ritter von Zeissberg (1839–1899), Austrian historian
Johann Georg Ritter von Zimmermann (1728–1795), Swiss philosophical writer and physician
Anselm Franz von Ritter zu Groenesteyn (1692–1765), Dutch-German government official and architect
Eduard Ritter von Weber, the German mathematician
