The 1970–71 season was the 56th in the history of the Isthmian League, an English football competition.
Wycombe Wanderers were champions, winning their third Isthmian League title. At the end of the season Maidstone United and Wealdstone switched to the Southern Football League.
League table
Stadia and locations
Club Stadium Barking Mayesbrook Park Bromley Hayes Lane Clapton The Old Spotted Dog Ground Corinthian-Casuals King George's Field Dulwich Hamlet Champion Hill Enfield Southbury Road Hendon Claremont Road Hitchin Town Top Field Ilford Victoria Road Kingstonian Kingsmeadow Leytonstone Granleigh Road Maidstone United Gallagher Stadium Oxford City Marsh Lane St Albans City Clarence Park Sutton United Gander Green Lane Tooting & Mitcham United Imperial Fields Walthamstow Avenue Green Pond Road Wealdstone Grosvenor Vale Woking The Laithwaite Community Stadium Wycombe Wanderers Adams Park
References