Last name Óttarsson (Óttarsson 
) , all around the world, is an extremely rare cognomen. The family name Óttarsson is characteristic of Northern Europe, particularly Iceland, where it is quite a rare surname.
| björn óttarsson IS (b. 935) |
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| ásbjörn óttarsson Icelandic politician, IS (b. 1962) |
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| andri óttarsson (b. 1975) |
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Jón, Róbert, and Aðalsteinn