Prudboy (Russian: Прудбой) is a rural locality (a settlement) in Marinovskoye Rural Settlement, Kalachyovsky District, Volgograd Oblast, Russia.

Prudboy had a population of 798 in 2010.

[3] Prudboy is located 31 km east of Kalach-na-Donu (the district's administrative centre) by road.

Karpovka is the nearest rural locality.

This Kalachyovsky District location article is a stub.