Last name De Bernard (De Bernard 
) , around the world, is a rare surname. The cognomen De Bernard is habitual in Belgium, where it is a rare surname, Italy, and Costa Rica. Not in comparison with a country's population, the name is most common in Italy, France, and Belgium. Likewise, De Bernard is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| De Bernard | France, Argentina, Belgium, Costa Rica, Italy |
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charles de bernard de marigny French admiral, FR (b. 1740) |
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gaspard de bernard de marigny French general, FR (b. 1754) |
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bernard-armand-jean de bernard du port FR (b. 1772) |
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charles de bernard French author, FR (b. 1804) |
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| françois de bernard de seigneurens FR (b. 1959) |
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