Cognomen Ottarsson (Ottarsson 
) , around the globe, is a rare surname. The family name Ottarsson is habitual in Northern Europe, particularly Iceland, where it is quite a common surname, Norway, where it is a very rare surname, and Denmark.
| helgi ottarsson 930 (b. 930) |
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| gudlaugur kristinn ottarsson Icelandic musician and mathematician, IS (b. 1954) |
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| sæmundur kjartan ottarsson Ph.D. University of Warwick 1985 |
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