| Karl V. Matthíasson | |
| Birth Date: | 12 August 1952 |
| Birth Place: | Akureyri, Iceland |
| Office: | Member of Alþingi |
| Term Start: | 2001 – 2003 2007 |
| Term End: | 2009 |
| Party: | Social Democratic Alliance Liberal Party |
| Children: | 3 |
| Alma Mater: | University of Iceland |
Karl V. Matthíasson is an Icelandic priest and former politician. He was a member of Alþingi from 2001 to 2003 and again from 2007 to 2009. Originally a member of the Social Democratic Alliance, he joined the Liberal Party in March 2009 due to his views on the fishing industry regulations not coinciding with the views of the party. In the 2009 Icelandic parliamentary election, he failed to win a seat.[1] [2]