Last name Oustad (Oustad 
) , worldwide, is a rare surname. The family name Oustad is characteristic of Norway, where it is quite a rare surname, Morocco, where it is a rare surname, and France, where it is a very rare surname. In absolute terms, the name is most common in Norway, Morocco, and the United States. Very seldom, Oustad is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Oustad | Norway, France, United States, Algeria, Morocco |
| kristoffer olsen oustad Norwegian-American engineer, US (b. 1857) |
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| kristoffer oustad Norwegian musician (b. 1979) |
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| emil oustad (b. 1989) |
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| mathilde oustad |
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