Þórarinsson

Þórarinsson is a surname of Icelandic origin, meaning son of Þórarinn. In Icelandic names, the name is not strictly a surname, but a patronymic. The name refers to:
 * Árni Þórarinsson (b. 1950), Icelandic journalist and novelist
 * Birgir Þórarinsson (b. 1965), Icelandic politician
 * Hjálmar Þórarinsson (b. 1986), Icelandic professional football player
 * Sigurður Þórarinsson (1912–1983), Icelandic geologist and vulcanologist