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Globally, Sigurðr (Sigurd , Sigurður , Sjúrður ) is quite a common boy's forename. The first name Sigurðr is habitual in Northern Europe, particularly Iceland, where it is a common male name, Norway, where it is quite a common male name, and Sweden, where it is quite a rare masculine name. Not in comparison with a country's population, this name is the most popular in Germany, Sweden, and Norway. Very seldom, Sigurðr is the last name as well as the forename.
Sigurðr is also a name for the fictitious and mythical characters: Førstebetjent Sigurd Helmer , character in Nitimemordet; Sigurd of Vanaheim , the fictional character, Conan the Buccaneer and Sigurd , the operatic character in the opera Sigurd by Ernest Reyer; Frankish hero.