1978–79 Mexican Segunda División season

The 1978–79 Segunda División was the 30th season of the Mexican Segunda División. The season started on 8 July 1978 and concluded on 22 June 1979. It was won by Atlas.

Changes

 * Zacatepec was promoted to Primera División.
 * Atlas was relegated from Primera División.
 * Zamora and U.V. Coatzacoalcos were promoted from Tercera División.
 * Ciudad Victoria was relegated from Segunda División.
 * Estudiantes de Querétaro and Querétaro F.C. were bought by the same businessman, after this, the new owner created two new teams called Atletas Campesinos and Atletas Industriales.
 * Tecnológico de Celaya, Bravos de Ciudad Madero and Inter Acapulco have dissolved.