Jonke is a German surname. Etymologically, it is a diminutive of the name Johann 'John'. Variations of the surname Jonke include Jonker, Yonke, and Yonker. It appears in Germany, Austria, and other German-language territories, as well in Slovenia, where the surname appeared among Gottschee Germans.Gottschee surnames The surname may refer to:

Frank Jonke (born 1985), Canadian soccer player Georg Jonke (1777–1864), Carniolan priest and beekeeper Gert Jonke (1946–2009), Austrian poet, playwright and novelist John Jonke (born 1987), Canadian soccer player Ljudevit Jonke (1907–1979), Croatian linguist

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