Rietberg is a town situated in the district of Gütersloh within the state of North Rhine-Westphalia, Germany. It is located in the Ostwestfalen-Lippe region on the banks of the river Ems.
The town is positioned approximately 10 km south of Gütersloh and 25 km north-west of Paderborn. As of recent data, Rietberg has a population of 28,878 residents.