Family name Slethaug (Slethaug 
) , globally, is a very rare surname. The family name Slethaug is characteristic of Norway, where it is quite a rare surname, Canada, where it is an extremely rare surname, and the United Kingdom. Not in comparison with a country's population, it most frequently occurs in Norway, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Slethaug | United Kingdom, Norway, United States, Canada |
| sverre m. slethaug Norwegian athletics competitor (b. 1971) |
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| gordon slethaug American academic |
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