Surname Kloster (Kloster 
, Clauster , Клостер 
) , across the world, is a common last name. The cognomen Kloster is habitual in Denmark, where it is quite a common surname, Norway, where it is quite a rare surname, and Argentina. In absolute terms, the name is most common in Argentina, Germany, and the United States. Much less frequently, Kloster is the forename as well as the last name.
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| Kloster | Germany, Brazil, Denmark, United States, Argentina |
| Clauster | Brazil |
| Клостер | Kazakhstan, Ukraine, Belarus, Kyrgyzstan, Russia |
| Luostari | United States, Finland, New Zealand, Estonia |
| thomas lund til grinderslev kloster (b. 1728) |
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| peder madsen kloster (b. 1758) |
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asbjørn kloster Norwegian activist (b. 1823) |
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gustav grüner til høstemark og egense kloster DK (b. 1827) |
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| hallvard kloster Norwegian politician (b. 1853) |
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| charles kloster French painter, FR (b. 1884) |
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| robert kloster Norwegian art historian (b. 1905) |
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astrid kloster Norwegian artist, songwriter and singer (b. 1970) |
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| knut utstein kloster Norwegian businessman (1929-2020), NO (b. 1929) |
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| louis kloster Norwegian architect (1932-2011) (b. 1932) |
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| gunvor kloster Norwegian librarian (b. 1935) |
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myriam kloster French volleyball player, FR (b. 1989) |
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line kloster Norwegian athletics competitor (b. 1990) |
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| aksel kloster Norwegian politician (b. 1948) |
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| svetlana kloster chess player (b. 1962) |
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