Across the world, Aaldert (Adal 
, Aaldert 
) is a common epicene first name. The given name Aaldert is habitual in Algeria, where it is quite a common primarily masculine, but very infrequently feminine name, Ethiopia, where it is quite a common gender-neutral name, and Libya, where it is quite a rare masculine name. Not in comparison with a country's population, it is commonest in Ethiopia, Algeria, and India. Likewise, Aaldert is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Adal | Turkey, Ethiopia, Algeria, Egypt, India |
| Aaldert | Germany, China, United Kingdom, United States, Netherlands |
| aaldert stevens Dutch teacher, NL (b. 1799) |
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| aaldert willem van erkel Dutch architect, NL (b. 1839) |
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| aaldert arnold jan quanjer Dutch photographer, NL (b. 1886) |
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| aaldert pieter van wijk NL (b. 1892) |
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| aaldert teunis willem de kluis NL (b. 1897) |
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| aaldert wapstra Dutch nuclear physicist, NL (b. 1922) |
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| aaldert compagner Ph.D. Universiteit Utrecht 1972 |
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| aaldert van weelden |
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| aaldert arnold quanjer |
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De, Punter, Eekhof, Wijnja, Mellema, Kuipers, Kikkert, Kroesen, Goverts, Lageveen, Jonkers, Hooijer, Oosting, Weelden, Zijlstra, Zwiggelaar, Prinsloo, Hendriks, Schippers, Ravenhorst, Oosterhuis, Oosthuizen, Koster, Sikken, Zomer, Weerd, Bos, Pol, Rus, Van, Vos, Wal, Moes, Span, Smit, Slot, Van Der Wal, Kuik, Rink, Dijk, Doek, Haan, Koops, Prins, Jonge, Horst, Onink, Otten, Knol, and Van Der Zand