Þorvaldsson is a surname of Icelandic origin, meaning son of Þorvaldur. In Icelandic names, the name is not strictly a surname, but a patronymic. The name refers to: Einar Thorvaldsson (1902–1967), Icelandic chess master Gissur Þorvaldsson (1208–1268), Icelandic chieftain, goði of the Haukdælir family clan Gudmundur Thorvaldsson, Icelandic actor Gunnar Heiðar Þorvaldsson (b. 1982), Icelandic professional football player Sigurður Þorvaldsson (b. 1980), Icelandic professional basketball player