Last name Alaerts (Alaerts 
) , all over the world, is a rare cognomen. The cognomen Alaerts is characteristic of Belgium, where it is quite a rare surname, Norway, where it is a very rare surname, and Netherlands. Not in comparison with a country's population, this name is the most popular in Belgium, South Africa, and the United States. Much less frequently, Alaerts is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Alaerts | South Africa, United States, Netherlands, Belgium, China |
| joseph alaerts (b. 1937) |
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| lea alaerts Belgian athletics competitor, BE (b. 1954) |
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| kaat alaerts researcher |
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| luc alaerts researcher |
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| maaike alaerts researcher |
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| kai alaerts Belgian alpine skier, BE (b. 1989) |
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| lieve alaerts |
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Mr, Anja, Axel, Carl, Bart, Kaat, Kris, Kyra, Paul, Rani, Rita, Dirk, Gust, Gert, Leen, Ludo, Lynn, Jana, Jean, Jill, Theo, Tiny, Anna, Sven, Stef, Sara, Ms, Jo, Ann, Rob, Ria, Guy, Leo, Luc, Jan, Jos, Nick, Tom, Els, Eva, Ebe, Fay, Ine, Ivo, Wim, Yon, Xan, Marc, Tim, and Nika