Family name Koellner (Koellner 
) , in the entire world, is quite a rare cognomen. The surname Koellner is habitual in Austria, where it is quite a rare surname, Germany, and Denmark, where it is a rare surname. Measured by absolute frequency, the name is most common in Germany, the United States, and Austria. Very seldom, Koellner is the forename as well as the last name.
| erich koellner German naval officer, DE (b. 1884) |
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| zbigniew koellner UA (b. 1892) |
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peter koellner Philosopher of mathematics |
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| thomas koellner researcher |
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| peter koellner Dr. rer. nat. Martin-Luther-Universität Halle-Wittenberg 1974 |
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| otto koellner |
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| laurette koellner American businesswoman, US |
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| ruben gideon koellner German chess player |
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