All around the world, Hrefna (Hrefna 
) is a rare female first name. The first name Hrefna is habitual in Northern Europe, particularly Iceland, where it is quite a common feminine name. Much less frequently, Hrefna is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hrefna | Denmark, Norway, Sweden, Iceland, United States |
| hrefna böðvarsdóttir IS (b. 1906) |
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| hrefna ólafsdóttir Icelandic teacher, IS (b. 1927) |
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hrefna huld jóhannesdóttir Icelandic association football player, IS (b. 1980) |
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| hrefna ingimarsdóttir (b. 1931) |
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| hrefna sigurjónsdóttir Icelandic biologist and academic (b. 1950) |
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| hrefna kristbjörg sigurðardóttir IS (b. 1951) |
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| hrefna sumarlína ingibergsdóttir IS (b. 1953) |
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| hrefna róbertsdóttir IS (b. 1961) |
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| hrefna sæunn einarsdóttir researcher |
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| hrefna dögg gunnarsdóttir researcher |
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| hrefna johannsdottir |
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| hrefna björk sverrisdóttir (b. 1981) |
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Sif, Bjarnadottir, Jóhannesdóttir, Jóhannsdóttir, Einarsdóttir, Friðriksdóttir, Ingólfsdóttir, Stefánsdóttir, Bjornsdottir, Bjorgvinsdottir, Pétursdóttir, Gunnarsdóttir, Guðmundsdóttir, Johannsdottir, Haraldsdóttir, Halldórsdóttir, Hallgrímsdóttir, Sigurðardóttir, Sigurjónsdóttir, Gunnarsdottir, Ingolfsdottir, Sigurdardottir, Bjarnadóttir, Björnsdóttir, Sverrisdottir, Sigfinnsdottir, Waage, Miller, Milner, Cereno, Lárusdóttir, Pálsdóttir, Guðlaugardóttir, Gylfadóttir, Jónsdóttir, Tindall, Sigurjonsdottir, Tómasar, Helgadóttir, Ævarsdóttir, Malmberg, Magnúsdóttir, Jonsdottir, Heimisdóttir, Hildreth, Óskarsdóttir, Ólafsdóttir, Þórsdóttir, Harðardóttir, and Gudmundsdottir