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| Archduke John | |
|---|---|
 Portrait by Leopold Kupelwieser, 1828 | |
| Imperial Regent of the German Empire | |
| In office | 12 July 1848 – 20 December 1849 |
| Predecessor | Ferdinand I of Austria (President of the German Confederation) |
| Successor | Francis Joseph I of Austria (President of the German Confederation) |
| Born | 20 January 1782 Florence, Grand Duchy of Tuscany |
| Died | 11 May 1859 (aged 77) Graz, Styria, Austrian Empire |
| Burial | |
| Spouse | Anna Maria Josephine Plochl |
| Issue | Franz, Count of Meran |
| House | Habsburg-Lorraine |
| Father | Leopold II, Holy Roman Emperor |
| Mother | Maria Luisa of Spain |
| Signature |  |
Archduke John of Austria (German: Erzherzog Johann Baptist Joseph Fabian Sebastian von Österreich, IPA: [ˈɛʁt͡sˌheʁt͡sok ˈjoːhan]; Slovene: Nadvojvoda Janez Habsburško-Lotarinški (or simply Nadvojvoda Janez); 20 January 1782 – 11 May 1859), a member of the House of Habsburg-Lorraine, was an Austrian field marshal and imperial regent (Reichsverweser) of the short-lived German Empire during the Revolutions of 1848.