Last name Leyhausen (Leyhausen 
) , around the globe, is a rare family name. The last name Leyhausen is habitual in Germany, where it is a rare surname, Spain, where it is a very rare surname, and Italy, where it is an extremely rare surname. Very seldom, Leyhausen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Leyhausen | Germany, Spain, Italy, United Kingdom, United States |
| clement leyhausen Belgian entrepreneur, BE (b. 1871) |
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| wilhelm leyhausen DE (b. 1887) |
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| karl leyhausen German painter (1899-1931), DE (b. 1899) |
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| paul leyhausen German zoologist, DE (b. 1916) |
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