Around the globe, Clas (Clas 
, كلاس 
, Клас 
) is quite a rare boy's first name. The forename Clas is characteristic of Northern Europe, particularly Sweden, where it is quite a rare male name, Finland, where it is a rare masculine name, and Norway. In absolute terms, it is the most numerous in Sweden, Indonesia, and Germany. Likewise, Clas is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Clas | United States, Indonesia, Sweden, Germany, Algeria |
| كلاس | Saudi Arabia, Morocco, Syria, Egypt, Sudan |
| Клас | Ukraine, Russia, Kyrgyzstan, Kazakhstan |
Clas is also a name for the fictitious and mythical characters: Klas Svensson , the fictional character of the Bert Diaries; Claes Waltin ; Klaas Guts and Klaas Vermeulen .
| clas åkesson tott Swedish Field Marshal, SE (b. 1530) |
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clas fleming Swedish admiral, SE (b. 1592) |
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clas tott Swedish politician, SE (b. 1630) |
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clas blechert trozelius botanist (1719-1794), SE (b. 1719) |
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clas frietzcky Swedish politician (1727-1803), SE (b. 1727) |
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clas alströmer Swedish botanist (1736-1794), SE (b. 1736) |
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clas fredrik horn af åminne Swedish poet, SE (b. 1763) |
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| clas göran schröder (b. 1714) |
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clas wallman Swedish architect, SE (b. 1774) |
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| clas bjerkander Swedish scientist (1735-1795), SE (b. 1735) |
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| clas bierkander botanist (1735-1795) (b. 1735) |
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| clas ludvig ennes (b. 1727) |
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clas livijn SE (b. 1781) |
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clas adam ehrengranat SE (b. 1781) |
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clas tamm Swedish ironmaster, SE (b. 1807) |
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