Family name Baldvinsdóttir (Baldvinsdóttir 
) , worldwide, is a very rare cognomen. The family name Baldvinsdóttir is characteristic of Northern Europe, particularly Iceland, where it is quite a common surname.
| VARIANT | COUNTRY |
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| Baldvinsdóttir | Iceland |
| helga steinvör baldvinsdóttir Icelandic poet (b. 1858) |
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| elísabet baldvinsdóttir IS (b. 1885) |
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| þorbjörg baldvinsdóttir IS (b. 1897) |
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| þóra margrét baldvinsdóttir wife of Bjarni Benediktsson, Prime Minister of Iceland (11 January 2017 – 30 November 2017), IS |
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| sigríður bjarney baldvinsdóttir IS (b. 1973) |
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| sunna baldvinsdóttir Icelandic association football player, IS (b. 1997) |
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