Family name Roulx (Roulx 
) , worldwide, is a rare last name. The last name Roulx is habitual in France, where it is a rare surname, Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Roulx is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Roulx | United States, France, China, Canada |
| laurent-justinien delaville le roulx BE (b. 1782) |
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| joseph delaville le roulx (b. 1797) |
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| joseph delaville le roulx French historian, FR (b. 1855) |
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| rené roulx drummer and teacher, CA |
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| jeanette la roulx |
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| nicholas le roulx |
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| pierre roulx FR |
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Mila, Norman, Nolwen, Bernard, Kaïssa, Kenneth, Richard, Georges, Thomas, Jeannot, Stephane, Coraline, Danielle, Tiphaine, Florence, Christian, Gwendolyn, Wilfred, Lauren, Kristi, Cyrill, Ruth, Dawn, Gail, Gwen, Jeas, Marie, Paula, Peter, David, Doris, Lucas, Norma, Maxime, Mikael, Muriel, Ashley, Claude, Christiane, and Christophe