Around the world, Eelko (Eelko 
) is a very rare male first name. The given name Eelko is characteristic of Western Europe, particularly Netherlands, where it is a rare male name, and Germany, where it is a very rare boy's name.
| VARIANT | COUNTRY |
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| Eelko | Germany, Netherlands, Italy, United States, Costa Rica |
| eelko liaukama NL (b. 1260) |
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| eelko alta Frisian clergyman, theologian, and veterinarian, NL (b. 1723) |
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| eelko napjus Dutch historian (1728-1803), NL (b. 1728) |
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| eelko huizingh (b. 1961) |
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| eelko hak researcher (ORCID 0000-0003-0849-7210) |
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| eelko herman wiebenga Ph.D. Universiteit Utrecht 1940 |
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| eelko ferwerda NL (b. 1973) |
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| eelko moorer NL (b. 1975) |
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| eelko hoek |
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De, Vooijs, Vries, Mulder, Schram, Bakker, Broers, Pluuren, Drenth, L'Abee, Visser, Wester, Anceaux, Bergsma, Brouwer, Jongsma, Nijkamp, Veerman, Weijden, Klootwijk, Hogeling, Vroomans, Neven, Jager, Groot, Kaats, May, Rol, Der, Van, Wal, Muns, Murk, Stel, Bolt, Boer, Lammertsen, Dijk, Haan, Hols, Hoek, Werf, Senne, Bouma, Breda, Brons, Broek, Bunte, Haas, and Verstraaten