南布格河（乌克兰语：Південний Буг）发源于乌克兰西部波多利亚高地，最终注入黑海，全长806公里。

流经的主要城市有：赫梅利尼茨基、文尼察、五一城、尼古拉耶夫。

The Southern Buh, also called Boh River (in Ukrainian) and Southern Bug (in Russian), (Ukrainian:Південний Буг, Pivdennyi Buh: Russian:Южный Буг, Yuzhny Bug), is a river located in Ukraine. The second longest river in Ukraine.

The source of the river is in the west of Ukraine, in the Volyn-Podillia Upland, about 145 km from the Polish border, from where it flows southeasterly into the Bug Estuary (Black Sea basin) through the southern steppes. It is 806 kilometres (501 mi) long and drains 63,700 km².