The Great Storm of 1703 was the most severe storm or natural disaster ever recorded in the southern part of Great Britain. It affected southern England and the English Channel in the Kingdom of Great Britain on the 26-27 November (December 7-8 in the modern calendar).

Observers at the time recorded barometric readings as low as 973 millibars (measured by William Derham in South Essex), but it has been suggested that the storm may have deepened to 950 millibars over the Midlands.