Halfdansson

Halfdansson is a Nordic surname that may refer to:


 * Eystein Halfdansson (c. 668 – 730)
 * Hemming Halfdansson (died 837)
 * Harald "Klak" Halfdansson (c. 785 – c. 852)
 * Haraldr Hálfdansson (c. 850 – c. 932)
 * Sigurd Syr Halfdansson (died 1018)