Valdimarsson is an Icelandic patronymic surname, literally meaning "son of Valdimar". People with the last name include: Hannibal Valdimarsson (1903–1991), Icelandic politician. Helgi Valdimarsson (born 1936), Icelandic scientist. Jón Steindór Valdimarsson (born 1958), Icelandic politician. Þórarinn Ingi Valdimarsson (born 1990), Icelandic footballer. See also. Valdimar. Waldemar / Valdemar https://en.wikipedia.org/wiki/Valdimarsson