The 1970–71 Yorkshire Football League was the 45th season in the history of the Yorkshire Football League, a football competition in England.
This season the league expanded up to three divisions.
Division One featured 12 clubs which competed in the previous season, along with two new clubs: Division Two featured eight clubs which competed in the previous season, along with six new clubs, relegated from Division One: The division was formed by nine clubs relegated from Division Two and six new clubs.