The district of Oldenburg (German: Landkreis Oldenburg, not to be confused with the cities of Oldenburg and Oldenburg in Holstein) is a district in the state of Lower Saxony, Germany. 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.