John VIII (1425 - 6 January 1477) was Count of Vendôme from 1466 until his death. A member of the House of Bourbon, he was the son and successor of Louis, Count of Vendôme. As a courtier of King Charles VII of France, he fought the English in Normandy and Guyenne. He attached himself to King Louis XI, but was not in royal favor. He withdrew to the Château of Lavardin and completed its construction.