Last name Sigfúsdóttir (Sigfúsdóttir 
) , in the entire world, is a very rare family name. The cognomen Sigfúsdóttir is habitual in Northern Europe, particularly Iceland, where it is quite a common surname.
| kristín sigfúsdóttir Icelandic writer (1876-1953), IS (b. 1876) |
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| rannveig sigfúsdóttir IS (b. 1869) |
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| friðrika sigfúsdóttir IS (b. 1896) |
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| maría sigfúsdóttir IS (b. 1898) |
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| helga sigfúsdóttir IS (b. 1899) |
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| ingibjörg sigfúsdóttir IS (b. 1909) |
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| guðrún sigfúsdóttir IS (b. 1924) |
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| adda bára sigfúsdóttir (b. 1926) |
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| maría huld markan sigfúsdóttir IS (b. 1980) |
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| emilía rós sigfúsdóttir IS (b. 1982) |
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| þórdís hrönn sigfúsdóttir Icelandic association football player, IS (b. 1993) |
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| bára sigfúsdóttir IS (b. 1984) |
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| halldóra birta sigfúsdóttir Icelandic association football player, IS |
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