Kansas City Southern de México, S. de R.L. de C.V. is wholly owned by Kansas City Southern.

Ferromex (Ferrocarril Mexicano, S.A. de C.V.) is owned 55.5 percent by Grupo México, S.A. de C.V., 26 percent by Union Pacific Railroad, and 18.5 percent by companies controlled by Carlos Slim Helú (Grupo Carso, S.A. and Grupo Financiero Inbursa, S.A.).

Ferrosur, S.A. de C.V. is owned 75 percent by Grupo México, S.A. de C.V. and 25 percent by companies controlled by Carlos Slim Helú (Grupo Carso, S.A. and Grupo Financiero Inbursa, S.A.).

Ferrovalle (Ferrocarril y Terminal del Valle de México, S.A. de C.V.) is jointly owned by Kansas City Southern de México, Ferromex, Ferrosur, and the Mexican federal government.

Ferroistmo (Ferrocarril del Istmo de Tehuantepec, S.A. de C.V.), a federal parastatal entity, is the temporary designated operator of the lines of the former Ferrocarriles Chiapas-Mayab, which has renounced its concession and ceased operation.

Ferrocarril Coahuila Durango (Linea Coahuila Durango, S.A. de C.V.) is jointly owned by Industrias Peñoles, S.A de C.V. and Grupo Acerero del Norte, S.A. de C.V.

Carrizo Gorge Railway, Inc. (through its subsidiary Ferrocarriles CZRY de Baja California, S.A. de C.V.) is the contract operator for the Administradora de la Vía Corta Tijuana-Tecate (ADMICARGA), a parastatal entity of the Baja California state government.

CG Railway, Inc. is wholly owned by International Shipholding Corporation.