Philibert Babou (c. 1484–1557) was a cryptographer and minister of finance for Francis I. Mayor of Tours in 1520, he was appointed trésorier in 1523, with powers to collect and distribute much of the king's revenue.
Francis I king of France, took his wife Marie Gaudin as a mistress, and from 1520 he built Château de la Bourdaisière for her.