Throughout the world, Gunnsteinn (Gunnsteinn 
) is a very rare masculine given name. The first name Gunnsteinn is characteristic of Northern Europe, particularly Iceland, where it is quite a rare masculine name.
| VARIANT | COUNTRY |
|---|---|
| Gunnsteinn | Spain, United States, Sweden, Iceland |
| gunnsteinn skulason Icelandic handball player, IS (b. 1947) |
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| gunnsteinn sigurðsson (b. 1950) |
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| gunnsteinn ólafsson Icelandic musician, IS (b. 1962) |
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| gunnsteinn finnsson M.S., civil engineering, University of Washington, 2013 |
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| gunnsteinn haraldsson researcher |
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Sson, Hall, Geirsson, Finnsson, Marsson, Skulason, Skúlason, Ómarsson, Björnsson, Magnusson, Sigurðsson, Jakobsson, Hjartarson, and Gunnarsson