Last name Geirsson (Geirsson 
) , all around the world, is a rare family name. The cognomen Geirsson is habitual in Northern Europe, particularly Iceland, where it is a common surname, Norway, where it is a rare surname, and Denmark. Much less frequently, Geirsson is the forename as well as the last name.
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| Geirsson | Denmark, Norway, Iceland, United States, United Kingdom |
| þorsteinn geirsson (b. 1638) |
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sveinn geirsson Icelandic actor, IS (b. 1971) |
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logi eldon geirsson Icelandic handball player, IS (b. 1982) |
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brynjar eldon geirsson |
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| elmar geirsson Icelandic footballer, IS (b. 1948) |
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| marteinn geirsson Icelandic footballer, IS (b. 1951) |
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| heimir geirsson Icelandic philosopher, IS (b. 1954) |
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| lúðvík geirsson Icelandic politician, IS (b. 1959) |
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| össur geirsson (b. 1961) |
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| halldór geirsson researcher |
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| gudmundur geirsson researcher |
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| reynir t geirsson researcher |
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| óli páll geirsson Ph.D. University of Iceland 2015 |
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| hafsteinn geirsson Olympic sailor, IS (b. 1980) |
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| arnar geirsson researcher |
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Mr, Ómar, Magnús, Sindri, Stefã, Sturla, Sveinn, Baldur, Bergur, Bjarni, Ragnar, Reynir, Gunnar, Gudjon, Grãmur, Terrie, Eyjólfur, Heimir, Hector, Hordur, Viðar, Fannar, Árni, Yngvi, Valur, Hrafn, Jon, Sara, Arni, Axel, Bjã, Karl, Rvar, Geir, Jón, Tine, Ingvar, Viã, Orri, Örn, Magni, Andri, Arnar, Agust, Peter, Gylfi, Einar, Eyvar, Ingi, and Ólafur