Earthquakes, triggered by movements within the Earth's crust, range from barely-detectable tremors to catastrophic events that have caused some of the biggest disasters in human history. This Wikipedia page serves as a comprehensive index, listing earthquakes by period, region, magnitude, cost, and fatalities. It highlights the deadliest events, noting that the 893 Ardabil earthquake is likely the same as the 893 Dvin event due to a historical misreading of Arabic text, and explains that magnitudes before 1900 are estimated from historical damage reports. The International Seismological Centre (ISC) ranks the most studied earthquakes based on the number of scientific papers written about them, while a separate list identifies the top ten most economically damaging quakes by US dollar value. The article organizes entries by time period (from pre-1900 to the present) and by location, covering regions like the British Isles and the Caribbean. Ultimately, it provides a structured gateway to explore how these powerful forces have been recorded and analyzed across the world.