Last name Klasson (Klasson 
) , around the globe, is quite a rare cognomen. The cognomen Klasson is habitual in Northern Europe, particularly Sweden, where it is quite a common surname, Norway, where it is a rare surname, and Estonia. Measured by absolute frequency, it is the most numerous in Sweden, the United States, and Pakistan. Much less frequently, Klasson is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Klasson | Norway, Pakistan, Canada, United States, Sweden |
| krister klasson FI (b. 1450) |
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| mikael klasson (b. 1960) |
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| niklas klasson researcher |
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| maria klasson researcher |
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| lisa klasson researcher |
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| arvid klasson - Abt 1556/1557 |
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| k. thomas klasson researcher ORCID ID = 0000-0003-3358-3081 |
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| henrik klasson FI |
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| oscar klasson association football player, SE (b. 1995) |
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| stevie klasson Swedish musician, SE |
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| evelina klasson Swedish association football player, SE |
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