拉基火山（冰岛语：Lakagígar ）是位于北欧国家冰岛的一个火山及火山裂缝。拉基火山本身实际上是火山裂缝喷发的产物。拉基火山曾经在934年和1783年两次大规模喷发。在934年的那次喷发中，拉基火山喷出了多达19.6 km³的玄武岩溶岩。1783年的喷发开始于1783年6月8日，直到持续到1784年2月才结束。共喷出了高达一亿两千万吨的二氧化硫。导致20%-25%的冰岛人因饥荒和中毒而死亡。以至于对欧洲和北美都产生了很大的影响。

Laki or Lakagígar (Craters of Laki) is a volcanic fissure in the south of Iceland, not far from the canyon of Eldgjá and the small village of Kirkjubæjarklaustur. Lakagígar is the correct name, as Laki mountain itself did not erupt, as fissures opened up on each side of it. Lakagígar is part of a volcanic system centered on the Grímsvötn volcano and including the Þórðarhyrna volcano. It lies between the glaciers of Mýrdalsjökull and Vatnajökull, in an area of fissures that run in a southwest to northeast direction.