The Kodza Déré Decauville Railway (Greek: Κοτζά Ντερέ ντεκοβίλ) was a 13.5-kilometre-long (8 mi) narrow-gauge military railway, which was built and operated by French troops during World War I from 1917 to 1918 at Paionia near Polykastro in Makedonia.

The valley of the Kodza Déré River was of strategi­cal im­por­tance to the Allied Forces of World War I because the French headquarters were based near Axioupolis and a camp of the 122nd Division and military hospital was located near Pigi.

The railway crossed the town of Axioupolis, historically known as Bohemitsa (Μποέμιτσα) passing two churches and a mosque.

To gain height quickly, it went through an elaborately built Vróncho Spiral (βρόγχο), to Pigi (Πηγή), then known as Isvor.

The track and most of the bridges were lifted after the war, but the route with its deep cuts and high embankments is partially still recognisable in the countryside.