Family name Duplaquet (Duplaquet 
) , in the entire world, is a rare cognomen. The family name Duplaquet is habitual in France, where it is a rare surname, Belgium, and Chile, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Duplaquet | Chile, United States, France, Belgium |
| jean quentin duplaquet politician, FR (b. 1766) |
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| charles duplaquet (1767-1828), CH (b. 1767) |
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| pablo alejandro vergara duplaquet chess player (b. 1938) |
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| leslie duplaquet researcher |
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Mr, Laurie, Leslie, Jeremy, Tibaut, Nathan, Elodie, Fabien, Ingrid, Ismael, Mélane, Aymeric, Cyrille, Célien, Bastien, Patrick, Djibril, Laurent, Joffrey, Justine, Thierry, Nicolas, Gilles, Didier, Damien, Pierre, Guy, Lou, Tom, Aude, Remy, Gina, Lisa, Jose, Jean, Fred, Fabrice, Maria, Cindy, Peggy, Laure, Lenny, Nancy, Yanis, Sylvie, Amicie, Astrid, Karine, Manon, and Francis