Thoroddsen is a common Icelandic family name. It may refer to:
Ásdís Thoroddsen (born 1959), Icelandic actress and film director Björn Thoroddsen (born 1958), Icelandic musician, guitar player Emil Thoroddsen (1898–1944), Icelandic composer, playwright and critic Gunnar Thoroddsen (1910–1983), Icelandic politician, Prime Minister of Iceland from 1980 to 1983 Halldóra K. Thoroddsen (1950–2020), Icelandic writer Jón Thoroddsen elder ( 1818–1868), Icelandic author Jón Thoroddsen junior (1898–1924), Icelandic author. Skúli Thoroddsen (1859–1916), Icelandic politician and judge Sigurður S. Thoroddsen (1902–1983), Icelandic politician Þorvaldur Thoroddsen (1855–1921), Icelandic geologist and geographer Theodóra Thoroddsen (1863–1954), Icelandic poet