1979–80 Yorkshire Football League

The 1979–80 Yorkshire Football League was the 54th season in the history of the Yorkshire Football League, a football competition in England.

Division One
Division One featured 12 clubs which competed in the previous season, along with four new clubs, promoted from Division Two:
 * Fryston Colliery Welfare
 * Liversedge
 * Ossett Albion
 * Thorne Colliery

Division Two
Division Two featured eight clubs which competed in the previous season, along with eight new clubs.
 * Clubs relegated from Division One:
 * Bentley Victoria Welfare
 * Kiveton Park
 * Lincoln United
 * Tadcaster Albion
 * Clubs promoted from Division Three:
 * Harworth Colliery Institute
 * BSC Parkgate
 * Stocksbridge Works
 * York Railway Institute

Division Three
Division Three featured nine clubs which competed in the previous season, along with seven new clubs.
 * Clubs relegated from Division Two:
 * Rawmarsh Welfare
 * Wombwell Sporting Association
 * Worsbrough Bridge Miners Welfare Athletic
 * Plus:
 * Pontefract Collieries