It is bounded by (from the east and clockwise) the districts of Diepholz, Vechta, Cloppenburg and Ammerland, the city of Oldenburg, the district of Wesermarsch and the city of Delmenhorst.

Until 1988 the administrative seat was in the city of Oldenburg.

The district is located between the metropolitan areas of Oldenburg and Bremen.

The Hunte River runs through the district from south to north.

Free municipalities 1seat of the Samtgemeinde Media related to Landkreis Oldenburg at Wikimedia Commons