Surname Brenac (Brenac 
) , globally, is a rare cognomen. The last name Brenac is habitual in France, where it is a rare surname, Australia, and Mexico, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in France, Australia, and the United States. Very seldom, Brenac is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Brenac | Mexico, United States, France, Spain, Australia |
| pierre amielh de brenac cardinal of the Roman Catholic Church, FR (b. 1309) |
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| olivier brenac French architect (b. 1947) |
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| myriam brenac French politician, FR (b. 1968) |
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| thierry brenac researcher |
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| antoni brenac FR |
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Mr, Cyril, Paris, René, David, Laura, Lucas, Julia, Julie, Edith, Henri, Marine, Marion, Michel, Myriam, Sophie, Sylvie, Arthur, Arnaud, Amelia, Adrien, Agathe, Annie, Audrey, Alain, Serge, Ms, Seb, Guy, Luc, Jã, Alix, Anne, Paul, Rene, Lise, Lyne, Léa, Jack, Jojo, Jean, Eric, Yves, Marie, Maïa, Sarah, Sacha, Alice, and Claude