Listed below are the worst disasters in Poland's history, listed by death toll. This list excludes warfare, the Holocaust and intentional acts of destruction, but may include accidents in which the military, Polish or foreign, was involved (e.g. Osiecznica bus disaster - a collision between a Polish bus and a Soviet Army truck).
Some of the disasters listed here occurred outside of current Polish borders (e.g. the Smolensk Tu-154 crash) or in times when Poland was not internationally recognized (e.g. during the partitions of Poland), but the predominant number of victims were either Poles or Polish citizens.