What is the name of Colombia's only metro system, located in Medellín?

Colombia’s only metro system is the Medellín Metro, serving Medellín and neighboring municipalities in the Aburrá Valley.

The system began commercial service on 30 November 1995 and became one of Colombia’s first modern mass-transit projects. It is owned jointly by the Department of Antioquia and the city of Medellín, and it forms the backbone of the wider Aburrá Valley Integrated Transport System. Its two main metro lines, A and B, connect the northern and southern parts of the valley with central and western districts.

The phrase “only metro system” is easy to misunderstand. Colombia has other major urban-transport networks, including Bogotá’s TransMilenio bus rapid transit, but TransMilenio is not a conventional metro. Bogotá Metro has long been a planned project rather than an operating system, while Cali has bus-based mass transit rather than a functioning metro railway.

Medellín’s network is broader than its two heavy-rail lines. Metrocable aerial gondolas, the Ayacucho tram and Metroplús bus services connect with the metro, helping reach steep hillside neighborhoods and expanding access beyond the rail corridors.