List of railway lines in Bulgaria
This is a list of railway lines in Bulgaria focusing primarily on intercity train lines. In 2019, there were of standard gauge railways, of which 67% were electrified. Narrow gauge lines amount to.
Train railways, as well as related infrastructure such as stations, are managed and maintained by the National Railway Infrastructure Company, which split from Bulgarian State Railways - Bulgaria's national rail company - in 2002. The National Railway Infrastructure Company holds a virtual monopoly on ownership and works closely with the State Railways.
Non-train rail transport in Bulgaria is limited to tram and metro services in Sofia, both managed by their own municipality-owned companies.
Active lines
Bolded indicates main lines. Italics indicate narrow-gauge lines.| Name | Route | Length | Gauge | Electrified | Usage |
| BDZ Line 1 | Kalotina – Sofia – Plovdiv – Svilengrad | Standard | Yes | Freight & passenger | |
| BDZ Line 2 | Sofia – Mezdra – Gorna Oryahovitsa – Kaspichan – Varna | Standard | Yes | Freight & passenger | |
| BDZ Line 3 | Iliyantsi – Tulovo – Dabovo – Zimnitsa – Karnobat – Sindel – Varna | Standard | Yes | Freight & passenger | |
| BDZ Line 4 | Ruse – Gorna Oryahovitsa – Dabovo – Tulovo – Stara Zagora – Mihaylovo – Podkova | Standard | Yes | Freight & passenger | |
| BDZ Line 5 | Sofia – Pernik – Radomir – Kulata | Standard | Yes | Freight & passenger | |
| BDZ Line 6 | Voluyak – Pernik – Gyueshevo | Standard | Yes | Freight & passenger | |
| BDZ Line 7 | Mezdra – Boychinovtsi – Brusartsi – Vidin | Standard | Yes | Freight & passenger | |
| BDZ Line 8 | Plovdiv – Stara Zagora – Yambol – Karnobat – Burgas | Standard | Yes | Freight & passenger | |
| BDZ Line 9 | Ruse – Samuil – Kaspichan | Standard | Yes | Freight & passenger | |
| BDZ Line 11 | Kalotina – Stanyantsi | Standard | No | Freight only | |
| BDZ Line 13 | Sofia – Voluyak – Bankya | Standard | No | Passenger only | |
| BDZ Line 16 | Septemvri – Dobrinishte | Narrow | No | Passenger only | |
| BDZ Line 18 | Stamboliyski – Peshtera | Standard | No | Passenger only | |
| BDZ Line 19 | Krumovo – Asenovgrad | Standard | Yes | Passenger only | |
| BDZ Line 23 | Yasen – Cherkovitsa | Standard | No | Passenger only | |
| BDZ Line 24 | Svishtov – Levski – Troyan | Standard | No | Passenger only | |
| BDZ Line 27 | Shumen – Komunari | Standard | Yes | Passenger only | |
| BDZ Line 28 | Povelyanovo – Kardam | Standard | Partially | Freight & passenger | |
| BDZ Line 42 | Tsareva Livada – Gabrovo | Standard | Yes | Passenger only | |
| BDZ Line 51 | Dupnitsa – Bobov Dol | Standard | Yes | Freight only | |
| BDZ Line 52 | General Todorov – Petrich | Standard | Yes | Passenger only | |
| BDZ Line 71 | Boychinovtsi – Berkovitsa | Standard | Yes | Passenger only | |
| BDZ Line 72 | Brusartsi – Lom | Standard | Yes | Passenger only | |
| BDZ Line 73 | Vidin – Koshava | Standard | Partially | Freight only | |
| BDZ Line 81 | Filipovo – Panagyurishte | Standard | No | Freight & passenger | |
| BDZ Line 82 | Filipovo – Dolna Mahala – Karlovo | Standard | Yes | Freight & passenger | |
| BDZ Line 82.1 | Dolna Mahala – Hisarya | Standard | Yes | Passenger only | |
| BDZ Line 83 | Simeonovgrad – Nova Zagora | Standard | Ongoing | Freight & passenger | |
| BDZ Line 91 | Samuil – Silistra | Standard | No | Passenger only |
Urban rail transport
The capital Sofia is the only Bulgarian city with an urban rail network. These include trams and subway trains. Until 1964, a ring railway connected a number of train stations within Sofia. This abandoned railway has seen renewed interest in 2019, with proposals to either partially restore and use it for connections to Sofia Airport and subway stations, convert it into a "green ring route" for bicycles, or both. In May 2020, it was decided that parts of this railway will not be restored for train movement, but for bicycles and pedestrians instead.Sofia's urban rail network is nevertheless integrated with the national railway network. Both the tram network and Sofia Metro have stations at Sofia Central Station, the central hub for several of the main train lines in Bulgaria.