Family name Thoroddsen (Thoroddsen 
) , all around the world, is a rare cognomen. The last name Thoroddsen is characteristic of Iceland, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Norway, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Iceland, Cyprus, and Thailand. Very seldom, Thoroddsen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Thoroddsen | Cyprus, Norway, United Kingdom, Iceland, Thailand |
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jón thoroddsen Icelandic writer, IS (b. 1818) |
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þorvaldur thoroddsen Icelandic cartographer (1855-1921), DK (b. 1855) |
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| skúli thoroddsen Icelandic politician (1859-1916), IS (b. 1859) |
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| theodóra thoroddsen Icelandic poet, IS (b. 1863) |
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| guðmundur thoroddsen IS (b. 1887) |
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| emil thoroddsen icelandic composer, playwright and critic, IS (b. 1898) |
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| sigurður s. thoroddsen Icelandic politician, IS (b. 1902) |
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| katrín thoroddsen IS (b. 1896) |
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| gunnar thoroddsen Icelandic politician (1910-1983), IS (b. 1910) |
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| halldóra ólafsdóttir thoroddsen Icelandic badminton player (1927-2014), IS (b. 1927) |
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| signy thoroddsen mother of Iceland's prime minister Katrín Jakobsdóttir (b. 1940) |
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| halldóra k. thoroddsen Icelandic writer, IS (b. 1950) |
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| björn thoroddsen Icelandic guitarist, IS (b. 1958) |
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| ásdís thoroddsen Icelandic actress and film director, IS (b. 1959) |
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| guðmundur thoroddsen Icelandic, b. 1980, IS (b. 1980) |
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