Last name Klaus (Klaus 
, كلاوس 
, Клаус 
, along with others...) , around the world, is a common family name. The family name Klaus is habitual in Western Europe, particularly Liechtenstein, where it is quite a common surname, Austria, and Germany (explore the name in all countries). Measured by absolute frequency, it is commonest in Germany, the United States, and Brazil. More prevalently, Klaus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klaus | Germany, Austria, Brazil, United States, Denmark |
| كلاوس | Iraq |
| Клаус | Kazakhstan, Ukraine, Tajikistan, Belarus, Russia |
| קלאוס | Israel |
| クラウス | Japan |
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david klaus DE (b. 1718) |
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| josef klaus Czech Roman Catholic priest, CZ (b. 1690) |
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| ignác klaus (b. 1717) |
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| matthias klaus AT (b. 1758) |
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anton klaus American mayor, US (b. 1829) |
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| jakob klaus German author, DE (b. 1788) |
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| franz hermann theodor klaus (b. 1778) |
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bruno klaus German educationist (1848-1915), DE (b. 1848) |
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| josef klaus artist, painter and lithographer (b. 1807) |
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| anton klaus DE (b. 1810) |
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| raimund klaus (b. 1812) |
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| jakob bonifaz klaus (1823-1892), CH (b. 1823) |
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frank klaus American boxer, US (b. 1887) |
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| johann klaus DE (b. 1833) |
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| christian klaus German painter (1843-1893), DE (b. 1843) |
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Koch, Schmitt, Schwarz, Krüger, Köhler, Richter, Lehmann, Nielsen, Neumann, Hofmann, Fischer, Winkler, Schubert, Schäfer, Petersen, Pedersen, Günther, Hartmann, Herrmann, Hoffmann, Schröder, Schneider, Schmidt, Schulze, Müller, Mueller, Wolf, Mayer, Maier, Meier, Meyer, Bauer, Klein, Peter, Lange, Huber, Friedrich, Weber, Berger, Becker, Kaiser, König, Peters, Jensen, Hansen, Walter, Wagner, Werner, Schulz, and Zimmermann