The 1356 Basel earthquake is the most significant seismological event to have occurred in Central Europe in recorded history and had a moment magnitude in the range of 6.0–7.1. This earthquake, which occurred on 18 October 1356, is also known as the Sankt-Lukas-Tag Erdbeben, as 18 October is the feast day of Saint Luke the Evangelist.

Basel, also known as Basle, is a city in northwestern Switzerland on the river Rhine. Basel is Switzerland's third-most-populous city, with 177,595 inhabitants within the city municipality limits. The official language of Basel is Swiss Standard German and the main spoken language is the local Basel German dialect.