Cognomen Questiaux (Questiaux 
) , across the world, is a rare surname. The surname Questiaux is habitual in Belgium, where it is quite a rare surname, France, where it is a rare surname, and Romania.
| VARIANT | COUNTRY |
|---|---|
| Questiaux | Romania, Belgium, South Africa, United States, France |
| j. jos questiaux BE (b. 1805) |
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nicole questiaux Minister of National Solidarity, FR (b. 1930) |
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| françois questiaux BE (b. 1900) |
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Mr, Gilles, Helene, Franã, Xavier, Mikhail, Antoine, Charles, Bernard, Benoist, Kenneth, Raymond, Jacques, Tristan, Vincent, Quentin, Mathilde, Michaël, Philippe, Rosemary, Danièle, Geoffroy, Romain, Pierre, Benoit, Coline, Amy, Mary, Anna, Axel, Paul, Ryan, Dale, Lisa, Lynn, Jean, Josselin, Yann, Sarah, Alain, Cathy, Ralph, David, Laura, Elise, Marine, Michel, Albert, Marie, and Stéphane