The 1979–80 Biathlon World Cup was a multi-race tournament over a season of biathlon, organised by the UIPMB (Union Internationale de Pentathlon Moderne et Biathlon). The season started on 18 January 1980 in Ruhpolding, West Germany, and ended on 30 March 1980 in Murmansk, Soviet Union. It was the third season of the Biathlon World Cup, and it was only held for men.
Below is the World Cup calendar for the 1979–80 season.
*The relays were technically unofficial races as they did not count towards anything in the World Cup.
Following notable biathletes retired after the 1979–80 season: