The Conseil du Roi (French pronunciation: ​[kɔ̃sɛj dy ʁwa]; French for King's Council), also known as the Royal Council, is a general term for the administrative and governmental apparatus around the King of France during the Ancien Régime designed to prepare his decisions and to advise him. It should not be confused with the role and title of a "Conseil du Roi", a type of public prosecutor in the French legal system at the same period.

One of the established principles of the French monarchy was that the king could not act without the advice of his council. Under Charles V, it was put forward that the king made decisions only after "good and careful deliberation" (French: bonne et mûre délibération), and this principle was maintained by his successors; the closing formula of royal acts "le roi en son conseil" expressed this deliberative aspect. Even during the period of French absolutism, the expression "car tel est notre bon plaisir" ("as such is our pleasure") applied to royal decisions made with consultation.

The administration of the French state in the early modern period went through a long evolution, as a truly administrative apparatus – relying on old nobility, newer chancellor nobility ("noblesse de robe") and administrative professionals – replaced the feudal clientele system. The exact divisions and names of these councils varied over time.