The Bucharest–Giurgiu Motorway (Romanian: Autostrada București–Giurgiu), labelled A5,[1] is a proposed motorway in the southern part of Romania, located in the historical region of Muntenia and running along the Pan-European Corridor IX.

The status of what could be the A5 motorway is unclear, with construction works on the motorway unlikely to begin before 2030,[2] especially since the adjacent road which the motorway would double, the National Road 5 (DN5), was upgraded throughout the 2000s to a road with dual carriageway and at-grade junctions without a hard shoulder (emergency lane).

[3] Moreover, a new expressway (termed DN5D) that would bypass the city of Giurgiu in the east (about 6 km long) opened in 2021, but this serves only as a connection to the existing Giurgiu border checkpoint and the Friendship Bridge over the Danube.

In the past, the Brașov - Bacău (Răcăciuni) motorway (162 km) used to be labelled A5.

The route number A5 was since reserved for an eventual motorway between Bucharest and Giurgiu.