米达尔斯冰原（冰岛语：Mýrdalsjökull）是冰岛位置最南的冰川，面积590平方公里，为冰岛第四大冰川。西临埃亚菲亚德拉冰盖。冰川下有著名的活火山卡特拉火山。

Mýrdalsjökull (pronounced [ˈmirtalsˌjœːkʏtl], Icelandic for "(the) mire dale glacier" or "(the) mire valley glacier") is an ice cap in the south of Iceland. It is to the north of Vík í Mýrdal and to the east of the smaller ice cap Eyjafjallajökull. Between these two glaciers is Fimmvörðuháls pass. Its peak reaches 1,493 m (4,898 ft) in height and in 1980 it covered an area of 595 km (230 sq mi).