The Bucharest Metro is an underground rapid transit system that serves Bucharest, the capital of Romania. It first opened for service on 16 November 1979. The network is run by Metrorex. One of two parts of the larger Bucharest public transport network, Metrorex has an average of approximately 720,000 passenger trips per weekday, compared to the 1,180,000 daily riders on Bucharest's STB transit system. In total, the Metrorex system is 79.1 kilometres (49.2 mi) long and has 64 stations.

Bucharest is the capital and largest city of Romania. The metropolis stands on the River Dâmbovița in south-eastern Romania. Its population is officially estimated at 1.76 million residents within a greater metropolitan area of 2.3 million residents, which makes Bucharest the 8th most-populous city in the European Union. The city area measures 240 km2 and comprises 6 districts (Sectoare), while the metropolitan area covers 1,811 km2. Bucharest is a beta global city, a major cultural, political and economic hub, and the country's seat of government.