The Junkers (/ˈjʊŋkər/ YUUNG-kər; German: [ˈjʊŋkɐ]) were the members of the landed nobility in Prussia. They owned great estates that were maintained and worked by peasants with few rights. They were an important factor in Prussian and, after 1871, German military, political and diplomatic leadership. The most famous Junker was Chancellor Otto von Bismarck.
Those who lived in the eastern provinces that either were annexed by Poland or the Soviet Union or became East Germany fled or were expelled by the Soviet or the Polish or East German communist regime after 1944 and their lands were confiscated. In western and southern Germany, the land was often owned by small independent farmers or a mixture of small farmers and estate owners, and this system was often contrasted with the dominance of the large estate owners of the east.
Junker is derived from Middle High German Juncherre, meaning "young nobleman" or otherwise "young lord" (derivation of jung and Herr), and originally was the title of members of the higher edelfrei (immediate) nobility without or before the accolade. It evolved to a general denotation of a young or lesser noble, often poor and politically insignificant, understood as "country squire" (cf. Martin Luther's disguise as "Junker Jörg" at the Wartburg; he would later mock King Henry VIII of England as "Juncker Heintz"). As part of the nobility, many Junker families only had prepositions such as von or zu before their family names without further ranks. The abbreviation of Junker is Jkr., most often placed before the given name and titles, for example: Jkr. Heinrich von Hohenberg. The female equivalent Junkfrau (Jkfr.) was used only sporadically. In some cases, the honorific Jkr. was also used for Freiherren (Barons) and Grafen (Counts).