The Secretariat of Infrastructure, Communications and Transportation (Secretaría de Infraestructura, Comunicaciones y Transportes, SICT) of Mexico is the national federal entity that regulates commercial road traffic and broadcasting.

The forerunner of the modern-day SCT was created in 1891 under President Porfirio Díaz and was known as the Secretariat of Communications (Secretaría de Comunicaciones); its first incumbent as secretary was Manuel González Cosío.

In 1920 it was renamed to the Secretariat of Communications and Public Works (Secretaría de Comunicaciones y Obras Públicas; "SCOP").

The SCT is headed by the Secretary of Communications and Transport, a member of the federal executive cabinet.

Under the 1917 Constitution, this position has been held by the following individuals: The Direction General of Civil Aeronautics is the agency under the SCT that regulates aviation.