Surname Käsper (Käsper 
) , around the globe, is a very rare last name. The family name Käsper is habitual in Estonia, where it is quite a rare surname, Sweden, where it is a rare surname, and Germany, where it is an extremely rare surname.
| eeva käsper Estonian artist, EE (b. 1971) |
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| eva-lotta käsper researcher (ORCID 0000-0002-7414-2015) |
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| henri käsper EE (b. 1972) |
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| kari käsper (b. 1981) |
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