Sigurjón Þórðarson (born 29 June 1964) is an Icelandic politician.
He was a member of the Althing for the Liberal Party from 2003 to 2007, and returned to the Althing in the 2024 election for the People's Party.
In 2010, he was elected leader of the Liberal Party.
[2] Sigurjón has a BS degree in biology from the University of Iceland and studied water pollution control technology at Cranfield University.
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