The 7.2 Mw Kopet Dag earthquake shakes the Iran-Turkmenistan border region with a maximum Mercalli intensity of IX (Violent), killing up to 3,800 and injuring 1,121.

The 1929 Kopet Dag earthquake (also called the 1929 Koppeh Dagh earthquake) took place at 15:37 UTC on 1 May with a moment magnitude of 7.2 and a maximum Mercalli intensity of IX (Violent). It occurred in the Kopet Dag area of Iran and caused up to 3,800 casualties along the Turkmenistan-Iran border. More than 1,100 were injured.