Duckmanton South Junction is a former railway junction near Arkwright Town in Derbyshire, England.
Duckmanton South Junction was one of four interrelated junctions built by the GCR to connect its main line to the LD&ECR's main line when it took the latter company over in 1907. The junctions are usually referred to collectively as "Duckmanton Junction" or occasionally as "Duckmanton Junctions."
The four junctions operated interactively, so they are described together in the article Duckmanton Junction to which the reader is referred.