Halldóra is an Icelandic given name which is the feminine form of Halldór.
List of people with the given name
Halldóra Briem (1913–1993), Icelandic architect Halldóra Eldjárn (1923–2008), first lady of Iceland Halldóra Eyjólfsdóttir (died 1210), Icelandic abbess Halldóra Geirharðsdóttir (born 1968), Icelandic actress and musician Halldóra Ísleifsdóttir (born 1970), Icelandic visual communication designer, artist, and design activist Halldóra Mogensen (born 1979), Icelandic politician Halldóra Sigvaldadóttir (died c. 1544), Icelandic abbess Halldóra K. Thoroddsen (1950–2020), Icelandic writer Halldóra Tumadóttir (1180–1247), Icelandic political figure