Thoroddsen is a common Icelandic family name. It may refer to:

• Björn Thoroddsen, Icelandic musician, guitar player
• Gunnar Thoroddsen (1910–1983), Icelandic politician, Prime Minister of Iceland from 1980 to 1983
• Jón Thoroddsen elder (c. 1818-1868), Icelandic author
• Jón Thoroddsen junior (1898-1924), Icelandic author.
• Þorvaldur Thoroddsen (1855–1921), Icelandic geologist and geographer

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