Surname Þorsteinsdóttir (Þorsteinsdóttir 
) , around the world, is a rare cognomen. The last name Þorsteinsdóttir is characteristic of Northern Europe, particularly Iceland, where it is quite a common surname, Denmark, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname.
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| Þorsteinsdóttir | Iceland, United Kingdom, Denmark |
| helga þorsteinsdóttir IS (b. 983) |
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| hallbera þorsteinsdóttir Icelandic abbess (b. 1300) |
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| sigríður þorsteinsdóttir Icelandic editor and publisher (b. 1841) |
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| þuríður þorsteinsdóttir IS (b. 1862) |
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| guðlaug þorsteinsdóttir IS (b. 1880) |
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| guðfinna þorsteinsdóttir Icelandic poet, IS (b. 1891) |
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| steinunn þorsteinsdóttir IS (b. 1887) |
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| sigríður þorsteinsdóttir IS (b. 1888) |
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| guðrún sveinbjörg þorsteinsdóttir IS (b. 1891) |
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| guðný þorsteinsdóttir IS (b. 1892) |
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| rannveig þorsteinsdóttir Icelandic politician and lawyer (1904-1987), IS (b. 1904) |
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| elín þorsteinsdóttir IS (b. 1898) |
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| þuríður þorsteinsdóttir IS (b. 1899) |
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| ásta jóhanna þorsteinsdóttir IS (b. 1901) |
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| kristjana þorsteinsdóttir IS (b. 1903) |
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Sif, Elín, Ester, Harpa, Helga, Hulda, Unnur, Ásta, Ásdís, Ólöf, María, Sandra, Sigrún, Sóley, Sólrún, Andrea, Brynja, Dagný, Guðný, Guðlaug, Laufey, Lovísa, Jóna, Lára, Lilja, Linda, Sara, Sæunn, Alda, Anna, Arna, Edda, Erna, Erla, Hrönn, Fjóla, Jenný, Yrsa, Silja, Sunna, Svava, Birna, Karen, Klara, Rakel, Ragna, Rósa, Gróa, Ása, and Jórunn