1972–73 Klass B season

The 1972-73 Klass B season is the 1972-73 season of the Klass B.

Zone 1
Apatitstroy Apatity, Polet Gorky, and Titan Berezniki qualified for the final round.

Zone 3
Granit Tetyukhe qualified for the final round.

Final results
Apatitstroy Apatity, Polet Gorky, and Titan Berezniki qualified for the Vtoraya Liga.