Cognomen Svanhildur (Svanhildur 
) , all around the world, is an extremely rare family name. The surname Svanhildur is habitual in Northern Europe, particularly Iceland, where it is quite a rare surname. Much more prevalently, Svanhildur is the forename as well as the last name.
Lóa, Jonsdottir, Juliusdottir, Harrison, Árnadóttir, Óskarsdóttir, Ólafsdóttir, Magnusson, Sævarsdóttir, Sverrisdóttir, Arnarsdotir, Reynisdóttir, Rúnarsdóttir, Garðarsdóttir, Traustadóttir, Erlingsdóttir, Olafsdottir, Kristjansson, Gunnlaugsdóttir, Guðmundsdóttir, Þórsteinsdóttir, Sigurðardóttir, Jafetsdottir, Karlsdóttir, Karadottir, Birkisdóttir, Haig, Holm, Sally, Doten, Skuladottir, Skuladóttir, Skúladóttir, Svansdóttir, Bogadottir, Pálmadóttir, Sigurdardottir, Pálsdóttir, Jónsdóttir, Eiríks, Egilsdóttir, Helgadóttir, Valsdóttir, Omarsdottir, Áskelsdóttir, Magnúsdóttir, Sigþórsdóttir, Sveinsdóttir, Geirarðsdóttir, and Thorvaldsdottir