Bundesautobahn 10 (translates from German as Federal Motorway 10, short form Autobahn 10, abbreviated as BAB 10 or A 10) is an orbital motorway around the German capital city of Berlin. Colloquially called Berliner Ring (Berlin Beltway), it is predominantly located in the state of Brandenburg, with a short stretch of 5 km (3 miles) in Berlin itself. It should not be confused with the Berliner Stadtring (Bundesautobahn 100) around Berlin's inner city.

With a total length of 196 km (122 miles), the BAB 10 is the longest orbital in continental Europe (Route 1 in Iceland is 1,322 km (821 mi)). The BAB 10 is 8 km (5 miles) longer than the M25 motorway around London.

The highway route markers run clockwise from the interchange at Schwanebeck (the former Prenzlau branch-off), where the Bundesautobahn 11 runs to Szczecin, Poland via the Pomellen/Kołbaskowo border crossing and the Polish A6 autostrada. From here the beltway leads southwards to the Spreeau interchange with the Bundesautobahn 12 to Frankfurt (Oder) and the Polish A2 autostrada. At the Schönefeld four-way interchange, the Bundesautobahn 13 leads to Dresden and the Bundesautobahn 113 to the Berliner Stadtring and the Berlin city centre via Berlin Brandenburg Airport.

The Berliner Ring then runs westwards to Nuthetal, where the Bundesautobahn 115 (including the former AVUS race track) also links to the Stadtring at the Funkturm Berlin. Next the Bundesautobahn 9 leads to Munich (at the Potsdam interchange) and the Bundesautobahn 2 to the Ruhr area (at Werder). From here the beltway runs northwards to the Dreieck Havelland interchange with the Bundesautobahn 24 to Hamburg, and finally turns eastwards to the Oranienburg and Pankow interchanges with the Bundesautobahn 111 and Bundesautobahn 114 motorways both leading to the Berliner Stadtring. It again reaches Schwanebeck at km 196.

The beginning and end of the kilometer is the cross Barnim, which until 2013 Dreieck Schwanebeck was called. From there, the A11 from Szczecin / Prenzlau joins the A10. In the direction of the kilometering (clockwise), the A12 leads from the outside at the triangle Spreeau, at the junction Schoenefeld the A13, at the triangle Potsdam the A9, at the triangle Werder the A 2 and at the triangle Havelland the A 24 in the Berliner Ring. The highway is connected to the Berliner Stadtring (A 100) and other parts of Berlin via the A 111 (Oranienburg), A 114 (Pankow), A 113 (Kreuz Schönefeld) and A 115 (Nuthetal), the northern part is called AVUS known), which open from the inside into the ring. The junctions Ludwigsfelde-Ost and Berlin-Spandau as well as the Oranienburg cross lead to motorway-like developed federal highways.

The first sections near Werder, Schwanebeck and Spreeau were opened between 1936 and the outbreak of World War II in 1939 as part of the Reichsautobahn program. Construction works were not resumed until 1972, when the East German authorities began to complete the orbital, in order to bypass West Berlin on the way from the capital East Berlin to Potsdam and the motorways leading to Magdeburg and Leipzig. The final stretch opened in 1979.

Those that are built from 1972 to 1979:

In the section between the former Berlin-Weißensee junction and the Berlin-Spandau interchange, the freeway completed today does not follow the original route.