The 7.4 Mw Manjil-Rudbar earthquake affects northern Iran with a maximum Mercalli intensity of X (Extreme), killing 35,000-50,000, and injuring 60,000-105,000.

The 1990 Manjil–Rudbar earthquake occurred on Thursday, June 21, 1990 at 00:30:14 local time in northern Iran. The shock had a moment magnitude of 7.4 and a Mercalli Intensity of X (Extreme). Widespread damage occurred to the northwest of the capital city of Tehran, including the cities of Rudbar and Manjil. The National Geophysical Data Center estimated that $8 billion in damage occurred in the affected area. Other earthquake catalogs presented estimates of the loss of life in the range of 35,000–50,000, with a further 60,000–105,000 that were injured.