Charles Martin (10 November 1433 – 5 January 1477), called the Bold, was the last duke of Burgundy from the House of Valois-Burgundy, ruling from 1467 to 1477. He was the only surviving legitimate son of Philip the Good and his third wife, Isabella of Portugal. As heir and as ruler, Charles vied for power and influence with rivals such as his overlord, King Louis XI of France. In 1465, Charles led a successful revolt of Louis's vassals in the War of the Public Weal.
After becoming the Duke of Burgundy in 1467, Charles pursued his ambitions for an independent kingdom which would stretch contiguously from the North Sea in the north to the borders of Savoy in the south. For this purpose, he acquired Guelders and Upper Alsace; sought the title King of the Romans; and gradually became an enemy of the Germans. Charles married Margaret of York for an English alliance. He arranged the betrothal of his only child, Mary, to Maximilian of Austria.