Last name Ísleifsson (Ísleifsson 
) , throughout the world, is a very rare surname. The surname Ísleifsson is characteristic of Northern Europe, particularly Iceland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ísleifsson | Iceland |
| gissur ísleifsson Icelandic priest, IS (b. 1042) |
|
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| teitur ísleifsson (b. 1046) |
|
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| ólafur ísleifsson Icelandic politician, IS (b. 1955) |
|
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| einar ísleifsson |
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