This chapter analyzes the Mexican government procurement system from an integral perspective. Part I provides a brief introduction. Part II deals with the organization of the Mexican State, in order for the reader to understand both the structure and functions of the procuring entities, and the differences between them. Part III describes the legal provisions applicable to procurement by the Federal Public Administration, comprised of the government entities subordinated to the Federal Executive. The legal framework is basically comprised of the Mexican Constitution, the Acquisitions and Public Works Act and those international trade agreements that Mexico is a party to. Only the NAFTA is explained however, since the other free trade agreements that Mexico has entered into with Latin-American countries are essentially identical. The procurement process is regulated primarily in the Acquisitions and Public Works Act, and is explained in Section B of Part III. Since the Act is fully consistent with Mexico’s international commitments, Section C, which describes the NAFTA, does not explain the procedural aspects in detail, but rather concentrates on coverage, and two basic principles: non-discrimination and transparency.