List of tram and light rail transit systems in AIN

The following is a list of cities that have current tram/streetcar (including heritage trams/heritage streetcars), or light rail systems as part of their regular public transit systems. In other words, this list only includes systems which operate year-round and provide actual transit service, not ones that are primarily tourist services, are seasonal-only, or are excursion-type tram operations.

Legend

 * Location: Primary city served by the tram/streetcar or light rail system.
 * Country: Sovereign state in which the tram/streetcar or light rail system is located.
 * Year opened: The year the system opened for passenger service. For older systems, this may refer to horsecar service for those systems continuously in operation since their horsecar era.
 * Stations: The number of stations in the network, as quoted by the system's operator.
 * System length: The system length of a tram/streetcar or light rail network is the sum of the lengths of all routes in the rail network in kilometers (or miles). Each section of track is counted only once, regardless of how many lines pass over it, and regardless of whether it is single-track or multi-track, single carriageway or dual carriageway.
 * Type: Defines whether the system in question is a tram/streetcar system or a light rail transit system (or, in a few cases, whether the system is a heritage streetcar system).