Cognomen Sigurdsson (Sigurdsson 
, Сигурдссон 
) , around the globe, is quite a common family name. The cognomen Sigurdsson is characteristic of Northern Europe, particularly Iceland, where it is a prevalent surname, Denmark, where it is quite a rare surname, and Norway. In absolute terms, it most frequently occurs in Northern Europe, particularly Iceland, Sweden, and Denmark. Very seldom, Sigurdsson is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sigurdsson | Denmark, Norway, Sweden, Iceland, United States |
| Сигурдссон | Russia |
Sigurdsen, Sigurdson, Sigurðsson, Sigurđsson, and Сігурдссон
| ragnvald sigurdsson Norwegian lord (b. 750) |
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ragnarr loðbrók sigurdsson legendary king of Denmark and Sweden, SE (b. 850) |
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| kåre sigurdsson NO (b. 865) |
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| guthorm sigurdsson (b. 881) |
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| einar sigurdsson Norwegian Earl of Orkney, GB (b. 989) |
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| halfdan sigurdsson (995-1047) (b. 995) |
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| thorfinn sigurdsson 11th-century Earl of Orkney, GB (b. 1009) |
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sverre sigurdsson King of Norway, NO (b. 1151) |
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| amund sigurdsson (b. 1400) |
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| asgeir sigurdsson (b. 1650) |
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eystein sigurdsson (b. 1925) |
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| thrainn sigurdsson Icelandic chess player, IS (b. 1912) |
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dagur sigurdsson Icelandic handball player, IS (b. 1973) |
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| olafur sigurdsson SE (b. 1914) |
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karl sigurdsson Roman Catholic bishop, NO |
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