Bundesautobahn 10 is an orbital motorway around the German capital city of Berlin. Colloquially called Berliner Ring , it is predominantly located in the state of Brandenburg, with a short stretch of 5 km in Berlin itself. It should not be confused with the Berliner Stadtring around Berlin's inner city.

A ring road is a road or a series of connected roads encircling a town, city or country. The most common purpose of a ring road is to assist in reducing traffic volumes in the urban centre, such as by offering an alternate route around the city for drivers who do not need to stop in the city core. Ring roads can also serve to connect suburbs to each other, allowing efficient travel between them.