The 1970–71 Segunda División was the 22nd season of the Mexican Segunda División. The season started on 19 December 1970 and concluded on 8 August 1971. It was won by San Luis, which was the first team to win the Segunda división one year after being promoted from Tercera División.[1]
^Morelia had started the season but in the round 20 against Zamora, the match was suspended due to incidents, as result of this, Morelia was disqualified and all its matches were annulled.[6]