List of companies of Mexico
is a federal republic in the southern half of North America. Mexico has the fifteenth largest nominal GDP and the eleventh largest by purchasing power parity. The Mexican economy is strongly linked to those of its North American Free Trade Agreement partners, especially the United States. Mexico was the first Latin American member of the Organisation for Economic Co-operation and Development, joining in 1994. It is classified as an upper-middle income country by the World Bank and a newly industrialized country by several analysts. By 2050, Mexico could become the world's fifth or seventh largest economy. The country is considered both a regional power and middle power, and is often identified as an emerging global power. Mexico is a member of the United Nations, the World Trade Organization, the G8+5, the G20, the Uniting for Consensus and the Pacific Alliance.
For further information on the types of business entities in this country and their abbreviations, see "Business entities in México".
Largest firms
This list shows firms in the Fortune Global 500, which ranks firms by total revenues reported before March 31, 2017. Only the top five firms are included as a sample.| Rank | Image | Name | 2016 Revenues | Employees | Notes |
| 152 | Pemex | $57,774 | 125,689 | State-owned oil and gas entity controlling much of the Mexican market. The firm was created through the nationalization of all foreign oil companies in Mexico in 1938 and governs oil exploration, extraction, refining, and commercialization in the country. | |
| 176 | América Móvil | $52,201 | 194,193 | Global mobile telecommunications firm with 289 million subscribers, making it one of the largest in the world. Notable subsidiaries include Claro, Telmex, NET, Embratel, Telcel, TracFone Wireless, and Page Plus Cellular. |