Cognomen Aernout (Aernout 
) , all around the world, is a rare family name. The last name Aernout is habitual in Western Europe, particularly Belgium, where it is quite a rare surname, France, where it is a rare surname, and Netherlands, where it is a very rare surname. Likewise, Aernout is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aernout | France, Netherlands, Belgium, Afghanistan, China |
| wilhelmus elias maria stephanus aernout Civil servant in the Netherlands Indies, NL (b. 1852) |
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| rob aernout Dutch military personnel, NL (b. 1911) |
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| willy aernout BE |
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