Jacques I.
Jacques I. is the name of the following people:
- Jacques I (Monaco) (1689–1751), Prince of Monaco
- Jacques I. Androuet du Cerceau (1510 / 1520–1585 / 1586), French architect, architectural theorist, draftsman and engraver
- Jacques I. de Bourbon, comte de La Marche (1319–1362), Connétable of France, Count of La Marche and Ponthieu
