Surname Kvarstein (Kvarstein 
) , throughout the world, is a very rare family name. The cognomen Kvarstein is habitual in Norway, where it is quite a rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kvarstein | Norway, Thailand |
| bernt kvarstein Norwegian surgeon (b. 1930) |
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| gunnvald kvarstein researcher |
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| elfrida hartveit kvarstein researcher |
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