Family name Hálfdánardóttir (Hálfdánardóttir 
) , globally, is a very rare surname. The last name Hálfdánardóttir is characteristic of Northern Europe, particularly Iceland, where it is quite a rare surname.
| áslaug helga hálfdánardóttir Icelandic singer, IS (b. 1974) |
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| margrét rósa hálfdánardóttir icelandic basketball player (b. 1994) |
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| sylvía rún hálfdánardóttir icelandic basketballer (b. 1998) |
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| ragnheiður kara hálfdánardóttir Icelandic association football player, IS (b. 1999) |
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| helena ósk hálfdánardóttir Icelandic association football player, IS |
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