Constitutional Council (France)
The Government of France consists of an executive branch (President of the Republic, Prime Minister, ministers, and their services and affiliated organizations), a legislative branch (both houses of Parliament), and a judicial branch. The judicial branch is, unlike for instance the federal judiciary of the United States under the Supreme Court, not organized into a single hierarchy (administrative courts fall under the Council of State, civil and criminal courts under the Court of Cassation), and some of its entities also have advisory functions. For historical reasons there has long been a hostility to having anything resembling a "Supreme Court"—that is, a powerful court able to quash legislation. Whether the Council is a court is a subject of academic discussion, but some scholars consider it the supreme court of France.
Court of Cassation (France)
The Court is not the only court of last resort in France. Cases involving claims against government bodies, local authorities, or the central government, including all delegated legislation (e.g., statutory instruments, ministerial orders), are heard by the administrative courts, for which the court of last resort is the Conseil d'État. In cases where there appears to be concurrent jurisdiction or a conflict of laws between the judicial and administrative courts, whether both retain jurisdiction ("positive dispute") or decline jurisdiction ("negative dispute"), the Jurisdictional Disputes Court ("Tribunal des Conflits") decides the issue. The Court is composed of 4 members from both senior courts and occasionally, to break a tie, the justice minister who, if present, presides.