1766 in Iceland

Incumbents

• Monarch: Frederick V ; Christian VII onwards
• Governor of Iceland: Otto von Rantzau

Events

• Hekla erupted, producing the second largest lava flow, 1.3 km³ covering 65 km², and third largest tephra volume, 0.24 km³, of any Icelandic volcano during the inhabited era.
• Holger Jacobaeus, a Danish merchant, constructed a large wooden house in Keflavík.