Metro usually refers to:

• Metropolitan area, a large population area and its adjacent zone of influence
  • For individual metropolitan areas, see the list of metropolitan areas by population

Metro was a very famous Hungarian rock band in the 1960s and early 1970s. When the Hungarian government cracked down on rock music that they considered subversive, Metro left the music industry. Band leader Zorán Sztevanovity has pursued an active solo career after his tenure with the band.

The Rome Metro is an underground public transportation system that operates in Rome, Italy. The network opened in 1955, making it the oldest in the country. The Metro comprises three lines – Line A (orange), Line B (blue) and Line C (green) – which operate on of route, serving 73 stations. The original lines in the system, Lines A and B, form an X shape with the lines intersecting at Termini Station, the main train station in Rome. Line B splits at the Bologna station into two branches. While Line C opened in 2014, it is not yet connected to the rest of the Metro network. Plans have also been announced for a fourth line.

The São Paulo Metrô , commonly called the Metrô, is the main rapid transit system in the city of São Paulo and the largest in Brazil. It is also the second largest system in South America and the third largest in Latin America, behind the Mexico City Metro and the Santiago Metro. The five main lines in the metro system system (Lines 1, 2, 3, 4 & 5) operate on of route, serving 65 stations. A sixth line, Line 15, is a monorail line that partially opened for service in 2014. In 2014, the four lines operated by CMSP (Lines 1, 2, 3 & 5) achieved an average weekday ridership of 3.09 million, and provided 895.6 million rides over the course of 2014; the entire Metro system served 1,098 million passengers when Line 4 is included with the other four lines.