The Cornish Rebellion of 1497 (Cornish: Rebellyans Kernow) is a popular uprising by the people of Cornwall in the far southwest of Britain.

Its primary cause is a response of people to the raising of war taxes by King Henry VII on the impoverished Cornish, to raise money for a campaign against Scotland, motivated by brief border skirmishes that are inspired by Perkin Warbeck's pretense to the English throne.

Tin miners are angered as the scale of the taxes overturns previous rights granted by Edward I of England to the Cornish Stannary Parliament, which exempted Cornwall from all taxes of 10ths or 15ths of income.

The Cornish have little sympathy for English wars against Scotland, considering that most Cornish are not English speakers at this time.