Louis I.
Louis I. is the name of the following people:
- Louis I. d'Amboise (before 1462–1503), Bishop of Albi
- Louis I. de Bourbon (called le Boiteux (the limping, the lame); † 1341/1342), Count of Clermont, Count of La Marche and Duke of Bourbon
- Louis I. de Bourbon, comte de Montpensier ( Louis the Good ; 1406–1486), Count of Montpensier and of Clermont-en-Auvergne from the House of Bourbon
- Louis I. de Bourbon, prince de Condé (Prince of Condé; 1530–1569), French general and founder of the House of Condé
- Louis I de Bourbon, duc de Vendôme (1612–1669), Duke of Vendôme, Beaufort, Mercœur, Penthièvre and Étampes and cardinal
- Louis I. de Bourbon, duc d'Orléans (1703–1752), member of the French royal family from the House of Bourbon-Orléans
- Louis I. de Châtillon († 1346), Count of Blois and Dunois, see Ludwig I. (Blois)
- Louis I de Luxembourg (1418–1475), Connétable of France, see Ludwig I (Ligny, St. Pol and Brienne)
- Louis I (Monaco) (1642–1701), Prince of Monaco
- Louis I. of Naples (1339-1384), Duke of Anjou, titular king of Naples, see Ludwig I. (Anjou)
- Louis-Philippe I ( Roi Citoyen (citizen-king); 1773–1850), king of France
