Louis of Praet, Louis of Flanders, Lord of Praet, or locally Lodewijk van Praet (1488, Bruges – 7 October 1555) was a nobleman from the Low Countries and an important diplomat and statesman under the Emperor Charles V.Louis was descended through his father from a bastard son of Louis of Male, count of Flanders, and through his mother from a bastard daughter of Philip the Good.