Cognomen Blanché (Blanché 
) , across the world, is a rare surname. The family name Blanché is habitual in South Africa, where it is a rare surname, France, and Spain, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in South Africa, France, and Germany. Also, Blanché is the forename as well as the last name.
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| Blanché | South Africa, Spain, France, Germany, United States |
| vincent blanché de pauniat French notary, mayor of an arrondissement of Paris (1818-1876), FR (b. 1818) |
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| robert blanché French philosopher (1898-1975), FR (b. 1898) |
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| hervé blanché French politician, FR (b. 1969) |
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| hélène blanché researcher |
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| johannes blanché South African politician, ZA |
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