The rail transport system in Estonia consists of about 1,200 kilometres (750 mi) of railway lines, of which 900 kilometres (560 mi) are currently in public use. The infrastructure of the railway network is mostly owned by the state and is regulated and surveyed by the Estonian Technical Surveillance Authority (Estonian: Tehnilise Järelevalve Amet).
All public railways in Estonia are 1,520 mm (4 ft 11 27⁄32 in) (Russian gauge), the same as in Russia, Belarus, Latvia, and Lithuania. The 1,520 mm gauge used in Estonia is also compatible with Finland's 1,524 mm (5 ft) gauge. Sometimes it is defined to be 1,524 mm (see Rail gauge in Estonia), for example when buying track maintenance or vehicles from Finland.
Railways in Estonia today are used mostly for freight transport, but also for passenger traffic. Passenger transport is most frequent near Tallinn, centred on the main Balti jaam.
The Estonian railway network is owned by the state-owned company AS Eesti Raudtee and the private company Edelaraudtee Infrastruktuuri AS. These railway network infrastructure operators provide all railway network services for railway operators running freight and passenger services. AS Eesti Raudtee provides approximately 800 kilometres (500 mi) of track, of which 107 kilometres (66 mi) is double track and 133 kilometres (83 mi) is electrified. Edelaraudtee Infrastruktuuri AS maintains 298 kilometres (185 mi) of track which consists of 219 kilometres (136 mi) of main line and 79 kilometres (49 mi) of station line.