Surname Kilgus (Kilgus 
) , in the world, is quite a rare family name. The last name Kilgus is habitual in Western Europe, particularly Switzerland, where it is quite a rare surname, Germany, where it is a rare surname, and Austria. Measured by absolute frequency, it is the most numerous in Germany, the United States, and Switzerland. Very seldom, Kilgus is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kilgus | Switzerland, Austria, France, United States, Germany |
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paul kilgus American baseball player, US (b. 1962) |
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| ernst kilgus CH (b. 1931) |
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| kurt kilgus (b. 1939) |
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| georg kilgus chess player (b. 1976) |
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| ernst kilgus Dr. rer. pol. Universität Zürich 1964 |
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| jakob kilgus researcher |
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| bernhard kilgus Dr. rer. nat. Ruhr-Universität Bochum 2020 |
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| stephen p kilgus researcher |
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| g. kilgus botanist |
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| bernhard kilgus Ph.D. Universität Kaiserslautern 1996 |
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| patrick kilgus |
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| nicolas kilgus FR |
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| daniel kilgus |
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