Cognomen Olaerts (Olaerts 
) , in all the world, is a rare family name. The surname Olaerts is characteristic of Belgium, where it is quite a rare surname, Netherlands, where it is a very rare surname, and the United States. Not in comparison with a country's population, it most frequently occurs in Belgium, the United States, and Brazil. Very seldom, Olaerts is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olaerts | Brazil, Canada, Belgium, United States, South Africa |
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jozef olaerts Belgian politician, BE (b. 1914) |
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els olaerts Belgian actress, BE (b. 1957) |
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| hugo olaerts Belgian politician, BE (b. 1949) |
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| wout olaerts BE (b. 1967) |
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| heleen olaerts researcher ORCID ID = 0000-0001-8181-6201 |
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| josephus olaerts BE |
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Mr, Lize, Ludo, Lyla, Jani, Jari, Joey, Jean, Tibo, Nele, Elke, Erik, Fran, Ferd, Inge, Inez, Iris, Ward, Wies, Wout, Yves, Marie, Dirk, Rita, Rene, Rosa, Ms, An, Ana, Ann, Raf, Guy, Luc, Jan, Jos, Jon, Marij, Jef, Vic, Wim, Marc, Sven, Anje, Bart, Bram, Koen, Paul, Piet, Tim, and Marga