The Kodyma () is a right tributary of the Southern Bug river of Ukraine. Originating from springs in a boggy valley near the village of , Podilsk Raion, Odesa Oblast, it flows within the Odesa Oblast and Mykolaiv Oblast and joins Southern Buh about 199 km away from its mouth, near Pervomaisk.
Settlements by the river include Balta, , , and Kryve Ozero.