Cognomen Bjarnarson (Bjarnarson 
) , worldwide, is a rare surname. The family name Bjarnarson is habitual in Iceland, where it is quite a rare surname, Denmark, where it is a rare surname, and Canada. Measured by absolute frequency, it is commonest in Denmark, Canada, and the United States. Much less frequently, Bjarnarson is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bjarnarson | Iceland, Denmark, Canada, United States |
| höfða-þórður bjarnarson (b. 870) |
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| auðunn skökull bjarnarson IS (b. 880) |
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| þórhallur bjarnarson Icelandic politician (1855-1916), IS (b. 1855) |
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| gunnar bjarnarson (b. 1917) |
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| tore bjarnarson Danish archer |
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| agustina bjarnarson Peerage person ID=476905 |
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| stefania bjarnarson researcher |
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| gregers bjarnarson (b. 1975) |
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| ólafur bjarnarson |
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Mr, Blaine, Bjarne, Robert, Glen W, Joshua, Marilyn, Michael, Stephen, Steinar, Anders, Chelsea, Richard, Darlene, Gregers, Jarratt, Marjorie, Michelle, Sherrith, Stefania, Stefanã, Brandon, Andrea, Summer, Magnús, Ms, Lee, Mary, Anna, Beth, Kari, Paul, Dean, Jeff, Aaron, Chase, Corey, Debra, Debby, Dorey, Jerry, Tammy, Nancy, Hanne, Helga, Wayne, Jennifer, and Jeanette