Date of Birth: 
Place of Birth: Reykjavík, Capital Region, Iceland
About Sveinbjörn Claessen
- Sveinbjörn Claessen (born 22 February 1986) is an Icelandic basketball player and a former member of the Icelandic men's national basketball team.
- Nicknamed Mr.
- ÍR, he has spent his entire career with Íþróttafélag Reykjavíkur, winning the Icelandic Cup with the club in 2007.
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