The Carolean Death March, also known as the Catastrophe on Øyfjellet was the disastrous retreat by a force of Swedish soldiers, under the command of Carl Gustaf Armfeldt, across the Tydal mountain range in Trøndelag around the new year 1718–1719.

Caroleans, from Carolus, the Latin form of the name Charles, is a term used to describe soldiers of the Swedish army during the reigns of Kings Charles XI and Charles XII of Sweden, and specifically from 1680, when Charles XI instituted an absolute monarchy and embarked on a series of sweeping military reforms, to the death of Charles XII in 1718.