Surname Cournault (Cournault 
) , in the entire world, is a rare family name. The last name Cournault is habitual in France, where it is a rare surname, China, where it is an extremely rare surname, and Brazil.
| VARIANT | COUNTRY |
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| Cournault | China, France, Brazil |
| charles cournault French painter and archaeologist (1815-1904), FR (b. 1815) |
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| charles-henri cournault French politician, FR (b. 1876) |
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| etienne cournault French painter (1891-1948), FR (b. 1891) |
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| christiane cournault (b. 1954) |
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| philippe cournault FR |
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