Cognomen Kopseng (Kopseng 
) , all around the world, is a very rare surname. The surname Kopseng is habitual in Norway, where it is a rare surname, New Zealand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kopseng | New Zealand, Norway, Canada, United States |
| kristen chr. kopseng (b. 1862) |
|
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| julio kopseng Norwegian dancer, CO (b. 1977) |
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