Public contracts are governed by rules and procedures distinct from private law contracts. The criteria for contrats administratifs are laid down in case law and by the legislator. The administrative courts treat as public contracts those which perform a public service or give unusual power to the public authority. The legislature has rules on public procurement and contracts for the sale of the public domain. Special rules apply to the contracts of public bodies with an industrial and commercial function and to contract formation, especially relating to public procurement. The rules on the validity of contractual consent and content mirror private law. Rules in relation to the performance of the contract are designed to protect the public interest. These may include powers for the administration to modify, suspend or terminate performance. They also include protection for either party against cost escalation. Remedies in public contracts are available to third parties affected. Public authorities may have powers to secure performance from a private contractor. The chapter concludes with reflections on the influence of EU law and the WTO on public procurement law in France.