Family name Þórhallsdóttir (Þórhallsdóttir 
) , throughout the world, is a very rare last name. The cognomen Þórhallsdóttir is habitual in Northern Europe, particularly Iceland, where it is quite a common surname.
| VARIANT | COUNTRY |
|---|---|
| Þórhallsdóttir | Iceland |
| dóra þórhallsdóttir First Lady of Iceland, IS (b. 1893) |
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| anna þórhallsdóttir Icelandic singer, IS (b. 1904) |
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| halldóra þórhallsdóttir Icelandic musician, IS (b. 1911) |
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| guðlaug þórhallsdóttir IS (b. 1918) |
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| helga þórhallsdóttir Icelandic musician, IS (b. 1931) |
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| jóhanna v. þórhallsdóttir IS (b. 1957) |
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| þórdís lóa þórhallsdóttir IS (b. 1965) |
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| björg þórhallsdóttir IS (b. 1974) |
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| hildur guðný þórhallsdóttir IS (b. 1975) |
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