Family name Sigmundsdóttir (Sigmundsdóttir 
) , throughout the world, is a very rare surname. The surname Sigmundsdóttir is habitual in Northern Europe, particularly Iceland, where it is quite a common surname.
| VARIANT | COUNTRY |
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| Sigmundsdóttir | Iceland |
| tóra sigmundsdóttir Faroese woman known from saga literature, FO (b. 979) |
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vigdis sigmundsdóttir Faroese artist (b. 1934) |
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| þorbjörg sigmundsdóttir IS (b. 1878) |
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| guðlaug sigmundsdóttir IS (b. 1895) |
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| kristjana sigmundsdóttir IS (b. 1933) |
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| alda helen sigmundsdóttir (b. 1962) |
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| jóhanna maría sigmundsdóttir Icelandic politician, IS (b. 1991) |
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| jóhanna maría sigmundsdóttir IS (b. 1991) |
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| sara sigmundsdóttir IS (b. 1992) |
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