Family name Ruais (Ruais 
) , globally, is a very rare surname. The cognomen Ruais is habitual in France, where it is a very rare surname, the United States, and Canada. Very seldom, Ruais is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ruais | Canada, Philippines, France, United States, India |
| pierre ruais French politician, FR (b. 1907) |
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gwendoline ruais Filipino beauty pageant winner, PH (b. 1989) |
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| stéphane ruais French painter, FR (b. 1945) |
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| brie ruais American artist (b. 1982) |
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| gwennaelle ruais Filipino model (b. 1988) |
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Guy, Michael, Michele, Arienne, Caleigh, Brieana, Kathryn, Kristen, Phyllis, Martine, Raymond, Lindsay, Stephane, Danielle, Jonathan, Stephanie, Charmaine, Guillaume, Gwennaëlle, Richard, Ronald, Robert, Philip, Jay, Cody, Paul, Rich, Leon, Lynn, Erin, Alice, Corey, Karen, Kathy, Renee, Gregg, Laura, James, Nancy, Sherry, Cherie, Pierre, Gwendoline, and Maria Lourdes