Around the world, Delfien (Delfien 
) is a very rare female first name. The first name Delfien is habitual in Western Europe, particularly Belgium, where it is a rare female name.
| VARIANT | COUNTRY |
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| Delfien | Belgium |
| delfien van haute Belgian writer (1869-1944), BE (b. 1869) |
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| delfien syx researcher (ORCID 0000-0001-9421-4496) |
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| delfien vanden heede Belgian performing artist, BE |
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| delfien bogaert researcher |
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| delfien wouters |
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Cloet, Schepens, Commeene, Brusseel, Raymakers, Debruyne, Danneels, Taillieu, Naessens, Vanneste, Vanspeybrouck, Verdeyen, Versaevel, Verhelst, Volckaert, Bruggeman, Decouttere, Gryspeerdt, Depoortere, Vierstraete, Vandenabeele, Vanoverbeke, Meersseman, Monbaliu, Wyffels, Termote, Rebry, Dewyn, Sigiez, Soenen, Smeets, Cogghe, Rabaey, Devloo, Defour, Gesqueire, Vanderhaeghen, Hurkmans, Marijsse, Maetens, Speleers, Coudijzer, Clybouw, Barbion, Denorme, Dendooven, Dekyvere, Lahoutte, Huyvaert, and Vandendriessche