Last name Matthíasdóttir (Matthíasdóttir 
) , throughout the world, is a rare cognomen. The family name Matthíasdóttir is characteristic of Northern Europe, particularly Iceland, where it is quite a common surname.
| herdís matthíasdóttir IS (b. 1886) |
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| valgerður matthíasdóttir IS (b. 1904) |
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| louisa matthíasdóttir Islandic-American artist (1917–2000), US (b. 1917) |
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| guðlaug matthíasdóttir IS (b. 1910) |
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| kristrún matthíasdóttir IS (b. 1923) |
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| kolbrún matthíasdóttir IS (b. 1942) |
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| guðbjörg matthíasdóttir (b. 1952) |
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| magnea j. matthíasdóttir IS (b. 1953) |
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| rut matthíasdóttir Icelandic association football player, IS (b. 1996) |
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