The City Municipality of Krško (Mestna občina Krško) is a city and metropolitan municipality in eastern Slovenia. Its seat is the town of Krško. The area is traditionally divided between Lower Styria (territory on the left bank of the Sava) and Lower Carniola (territory on the right bank of the Sava). The entire municipality is now included in the Lower Sava Statistical Region. Krško received the status of a city municipality in December 2021.
Archaeological evidence shows that the area was settled in prehistoric times. Along the Sava River, numerous Bronze and Iron Age sites as well as Roman finds show continuous occupation. After the Medieval period the area was a Habsburg possession. It was affected by Ottoman raids from the 15th to the 17th centuries.
