| Thór Vilhjálmsson | |
| Order1: | 3rd |
| Office1: | EFTA CourtPresident of the European Free Trade Association Court |
| Term Start1: | 2000 |
| Term End1: | 2002 |
| Predecessor1: | Bjørn Haug |
| Successor1: | Carl Baudenbacher |
| Birth Date: | 9 June 1930 |
| Birth Place: | Reykjavík, Iceland |
| Death Date: | 20 October 2015 |
| Death Place: | Reykjavík, Iceland |
| Nationality: | Icelandic |
| Alma Mater: | St. Andrews University University of Iceland New York University University of Copenhagen |
| Occupation: | Lawyer, jurist, professor |
Thór Vilhjálmsson (1930-2015) was an Icelandic jurist who served as judge and president of the Court of Justice of the European Free Trade Association States. Prior to his tenure on the EFTA Court, he served as a judge of the European Court of Human Rights, as an associate justice of the Supreme Court of Iceland, and as president of the Association of Icelandic Lawyers.