Gulyantsi Municipality (Bulgarian: Община Гулянци) is a municipality (obshtina) in Pleven Province, Northern Bulgaria, located along the right bank of Danube river, by the border with Romania.

It is named after its administrative centre - the town of Gulyantsi.

[1] The main cultural sight in the municipality are the ruins of the large Ancient Roman city of Ulpia Oescus.

Gulyantsi municipality has an area of 458 square kilometres, of which 70% is arable.

The region is flat, with elevation ranging from 30 to 50 metres above sea level.