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Events from the year 1862 in Germany.

• King of Bavaria – Maximilian II of Bavaria
• King of Saxony – John
• King of Hanover – George V^[1]
• King of Prussia – William I
• King of Württemberg – William I of Württemberg
• Grand Duke of Baden – Frederick I

• 9 August – Theater Baden-Baden opens with Béatrice et Bénédict.
• 21 September – Deutscher Sängerbund is founded.
• 30 September – Otto von Bismarck gives the speech named Blood and Iron in Berlin.

• Landesmuseum Württemberg is opened.

• 1 January – Heinrich Braun, German surgeon (died 1934)
• 6 January – August Oetker, German businessman (died 1918)
• 9 January – Agnes Bluhm, German physician (died 1943)
• 20 January – Karl von Tubeuf, German forestry scientist, mycologist and plant pathologist (died 1941)
• 23 January – David Hilbert, German mathematician (died 1943)
• 24 January – Prince Alfons of Bavaria, German nobleman (died 1933)
• 6 February – Joseph Friedrich Nicolaus Bornmüller, German botanist (died 1946)
• 22 February – Philipp von Hellingrath, German general (died 1939)
• 13 March – Wilhelm Weigand, German poet and writer (died 1949)
• 11 April – Heinrich Cunow, German politician (died 1936)
• 28 May – Theodor Fischer, German architect (died 1938)
• 7 June – Philipp Lenard, German physicist and the winner of the Nobel Prize for Physics in 1905 (died 1947)
• 12 June – Wilhelm Meyer-Förster, German novelist (died 1934)
• 18 June – Otto Immisch, German philologist (died 1936)
• 12 August – Martin Brendel, German astronomer (died 1939)
• 14 August – Prince Henry of Prussia, German Prussian prince (died 1929)
• 16 August – Ludwig Hermann Plate, German zoologist (died 1937)
• 20 August – Paul Stäckel, German mathematician (died 1919)
• 26 August – Theodor Siebs, German linguist (died 1941)
• 11 September – Augustin Henninghaus, German Roman Catholic missionary (died 1939)
• 15 September – Friedrich von Lindequist, German gouverneur of German South#West Africa (died 1945)
• 2 October – Karl Ebermaier, German governeur of Kamerun (died 1943)
• 4 October – Sebastian Finsterwalder, German mathematician (died 1951)
• 15 October – Conrad Ansorge, German composer and pianist (died 1930)
• 14 November – Johann Heinrich von Bernstorff, German diplomat and ambassador (died 1939)
• 15 November – Gerhart Hauptmann, German writer, Nobel Prize laureate (died 1946)
• 29 November – Friedrich Klose, German composer (died 1942)
• 14 December – Gunther von Etzel, German general (died 1948)

• 2 February – Rudolph Suhrlandt, German painter (born 1781)
• 15 February – Heinrich Adam, German painter (born 1787)
• 3 March – Princess Augusta Reuss of Köstritz, German Grand Duchess of Mecklenburg-Schwerin (born 1822)
• 19 March – Friedrich Wilhelm Schadow, German painter (born 1789)
• 15 July – Henriette Hanke, German writer (born 1785)
• 28 August – Albrecht Adam, German painter (born 1786)
• 12 November – Christian Gottlob Barth, German theologian (born 1799)