John Baird (born 1 September 1790, died in Stirling, 8 September 1820) was a Scottish revolutionary. A weaver by trade, he was brought up in the village of Condorrat. He is best remembered as a radical commander in the "Radical War" of 1820, and along with James Wilson and Andrew Hardie is the best remembered radical combatant in the "Radical War". He was sentenced to death and was executed outside Stirling Tolbooth on 8 September 1820 along with Hardie. He is remembered as a martyr to the fight for universal suffrage by many figures in Scotland, particularly the 1820 Society.