Surname Olaff (Olaff 
) , across the world, is a rare last name. The cognomen Olaff is characteristic of Norway, where it is a rare surname, Mexico, and Honduras, where it is a very rare surname. In absolute terms, the name is most common in Mexico, the United States, and Norway. Also, Olaff is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olaff | Norway, South Africa, Mexico, United States, Peru |
| gene olaff American soccer player (1920-2017), US (b. 1920) |
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| heidi skorge olaff researcher |
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