National (state) railways

• Albania - Hekurudha Shqiptare (HSH)
• Armenia - Հայկական Երկաթուղի փբը (ՀԵ) Haycacan Yerkatuwi (HJe)
• Austria - Österreichische Bundesbahnen (ÖBB)
• Azerbaijan — Azərbaycan Dəmir Yolları (ADY)
• Belarus - Беларуская чыгунка (БЧ)
• Belgium - Nationale Maatschappij der Belgische Spoorwegen (NMBS) - Société Nationale des Chemins de fer Belges (SNCB)
• Bosnia and Herzegovina - Željeznice Bosne i Hercegovine
• Bulgaria - Български държавни железници (Balgarski Darzhavni Zheleznitsi) (БДЖ - BDŻ)
• Croatia - Hrvatske Željeznice (HŽ)
• Cyprus - Cyprus Government Railway (CGR)
• Czech Republic - České dráhy (ČD)
• Denmark - Danske Statsbaner (DSB)
• Estonia - Eesti Raudtee (EVR)
• Finland - Valtion Rautatiet (VR)
• France - Société Nationale des Chemins de fer Français (SNCF)
• Georgia - საქართველოს რკინიგზა (სრ)
• Germany - Deutsche Bahn (DB)
• Greece - Οργανισμός Σιδηροδρόμων Ελλάδος (ΟΣΕ) - Hellenic Railways Organisation (OSE)
• Hungary - Magyar Államvasutak (MÁV)
• Ireland - Iarnród Éireann (IÉ)
• Italy - Ferrovie dello Stato (FS) - Trenitalia
• Kazakhstan - Kazakhstan Temir Zholy (KTŽ)
• Latvia - Latvijas dzelzceļš (LDZ)
• Liechtenstein - Zahnradbahn Honau–Lichtenstein (ZHB)^{[ dubious – discuss]}
• Lithuania - Lietuvos Geležinkeliai ( LTG)
• Luxembourg - Société Nationale des Chemins de Fer Luxembourgeois (CFL)
• Moldova - Calea Ferată din Moldova (CFM)
• Monaco - Monaco-Monte Carlo Metro
• Montenegro - Željeznica Crne Gore (ŽCG)
• Netherlands - Nederlandse Spoorwegen (NS)
• North Macedonia - Македонски Железници (Makedonski Železnici)(МЖ - MŽ)
• Norway - Vygruppen (Vy)
• Poland - Polskie Koleje Państwowe (PKP)
• Portugal - Comboios de Portugal (CP)
• Romania - Căile Ferate Române (CFR)
• Russia - Российские Железные Дороги (Rossiyskiye Zhyelyezniye Dorogi) (РЖД - RŻD)
• San Marino - Ferrovia Rimini-San Marino (SFVET)
• Serbia - Železnice Srbije (ŽS)
• Slovakia - Železničná spoločnosť Slovensko, a. s. (ZSSK)
• Slovenia - Slovenske železnice (SŽ)
• Spain - Renfe
• Switzerland - Schweizerische Bundesbahnen (SBB) / Chemins de fer fédéraux suisses (CFF) / Ferrovie federali svizzere (FFS) / Viafiers federalas svizras (VFS)
• Sweden - SJ AB (SJ)
• Turkey - Türkiye Cumhuriyeti Devlet Demiryolları İşletmesi (TCDD)
• Ukraine - Укрзалізниця (Ukrzaliznytsia) (УЗ - UZ)
• United Kingdom - British Rail (BR) (privatized 1997)
• Vatican City - Ferrovie del Vaticano

Regional and private railways

• Austria
  • Graz-Köflacher Eisenbahn (GKB)
  • Salzburger Lokalbahn (SLB)
  • Steiermärkische Landesbahnen (STLB)
  • Zillertalbahn (ZB)
  • Győr-Sopron-Ebenfurti Vasút (GySEV) – Raab-Oedenburg-Ebenfurth-Eisebahnen (ROeEE)
• France
  • Eurostar (merged with former Thalys)
• Belgium
  • Eurostar (merged with former Thalys)
• Czech Republic
  • NH-TRANS, a.s.
  • RegioJet
  • Železniční společnost Tanvald
  • Plzeňská dráha
  • Železnici Desná (ŽD)
• Denmark
  • Danish railways - Nordjyske Jernbaner
  • De sjællandske Statsbaner
  • Hohenzollerische Landesbahn AG (HzL)
  • Vogtlandbahn (VB)
• Germany
  • Eurostar (former Thalys)
  • Flixtrain
• Hungary
  • Győr-Sopron-Ebenfurti Vasút (GySEV) – Raab-Oedenburg-Ebenfurth-Eisebahnen (ROeEE)
• Italy
  • Ferrovia Circumetnea (FCE)
  • Ferrovie Nord Milano (FNM)
  • Ferrovia Alta Valtellina (FAV)
  • Ferrovia Valle Seriana (FVS)
  • Società Nazionale Ferrovie e Tramvie (Brescia Iseo Edolo)
  • Ferrovia Valle Brembana
  • Ferrovia Mantova Peschiera
  • Ferrovia Intra Omegna (SAVTE)
  • Ferrovie Reggiane (CCFR)
  • Ferrovie Modenesi
  • Ferrovie Padane
  • Ferrovia Parma Suzzara
  • Ferrovia Suzzara Ferrara (FSF)
  • Ferrovia Casalecchio Vignola (FCV)
  • Ferrovia Torino Ceres (FTC)
  • Ferrovia Canavesana
  • Ferrovie Elettriche Biellesi
  • Ferrovia Rezzato Vobarno
  • Ferrovia Piacenza Bettola (SIFT)
  • Ferrovia Lana Postal
  • Ferrovia Transatesina - Bolzano Caldaro
  • Ferrovia Bribano Agordo
  • Ferrovia Udine Cividale (FUC)
  • Ferrovia Adria Mestre
  • Ferrovia Centrale Umbra (FCU)
  • Ferrovia Siena-Buonconvento-Monte Antico
  • Ferrovia Sangritana
  • Ferrovie siciliane
  • Ferrovie del Sud Est (FSE)
  • La Ferroviaria Italiana
  • Ferrovie del Gargano
  • Ferrovie del Nord Barese
  • Ferrovia Alifana
  • Ferrovia Cumana
  • Ferrovia Benevento-Cancello
  • Ferrovia Avellino-Rocchetta Sant'Antonio
  • Ferrovie Appulo Lucane
  • Ferrovia Genova Casella
  • Ferrovia delle Dolomiti
  • Ferrovia Cogne Acquefredde
  • Ferrovia Stresa Mottarone (closed in 1963)
  • Ferrovia Intra Premeno
  • Ferrovia Trento-Malè
  • Ferrovia della Val di Fiemme
  • Ferrovia del Renon
  • Ferrovia Alto Pistoiese
  • Ferrovia Roma Fiuggi Alatri Frosinone
  • Ferrovia Spoleto Norcia
  • Ferrovia Circumvesuviana
  • Ferrovie Calabro Lucane
  • Ferrovia Circumetnea
  • Strade Ferrate Secondarie della Sardegna
  • Ferrovie Complementari Sarde
  • Ferrovie Meridionali Sarde
  • Strade Ferrate Sarde
  • Ferrovie della Sardegna
  • Ferrovia Siracusa Ragusa Vizzini
  • Ferrovia Basso Sebino
  • Ferrovia Val d'Orcia
  • Ferrovia Valmorea
  • Ferrovia Domodossola-Locarno
  • Sad Trasporto Locale S.p.a.
  • Società Subalpina Imprese Ferroviarie [ de] (SSIF)
  • Nuovo Trasporto Viaggiatori
• Netherlands
  • Eurostar (former Thalys)
• Norway
  • Tågkompaniet AB (TK)
• Poland
  • Arriva RP
  • Koleje Dolnośląskie
  • Koleje Mazowieckie
  • Koleje Śląskie
  • Koleje Wielkopolskie
  • PKP Intercity
  • Przewozy Regionalne
  • Szybka Kolej Miejska (Warsaw)
  • Szybka Kolej Miejska (Tricity)
  • Warszawska Kolej Dojazdowa
• Romania
  • Regio Călători
  • Interregional Călători
  • Softrans
  • Transferoviar Călători (T.F.C.)
  • Astra Trans Carpatic
• Spain
  • Canfranero
  • Cercanías
  • El ferrocarril de la Minero Siderurgica de Ponferrada (MSP)
  • Ferrocarril Santander-Mediterráneo
  • Ferrocarril Vasco-Asturiano
  • Ferrocarril de La Robla
  • Ferrocarril de Langreo
  • Ferrocarril del Almanzora
  • La línea de ferrocarril Baeza-Utiel
  • Metro de Palma de Mallorca
  • Ferrocarriles Secundarios de Castilla
  • Tren Camino de Santiago
  • Trenet de la Marina
  • Alta Velocidad (LAV)
  • Ferrocarril suburbano de Carabanchel
  • Ferrocarrils de la Generalitat de Catalunya (FGC)
  • Ouigo España
  • Intermobilidad de Levante
• Sweden
  • Bergkvist Svets & Mek Järnväg AB (BSMJ)
  • Sydvästen AB (SV)
  • Tågkompaniet AB (TK)
  • Flixtrain
• Switzerland
  • Appenzeller Bahnen (AB)
  • BLS AG (BLS)
  • Berner Oberland Bahn (BOB)
  • BVZ Zermatt-Bahn (BVZ)
  • Domodossola–Locarno railway (Centovallina)
  • CISALPINO AG
  • Furka Oberalp Bahn (FO)
  • Glacier Express (GE)
  • GoldenPass Line (GPL)
  • Gornergratbahn (GB)
  • Jungfraubahn (JB)
  • Chemins de fer du Jura (CJ)
  • Transports de Martigny et Régions SA
  • Matterhorn Gotthard Bahn (MGB)
  • Montreux–Lenk im Simmental line
  • Regionalverkehr Bern-Solothurn (RBS)
  • Rhätische Bahn (RB)
  • Südostbahn (SOB)
  • Voralpen Express (VAE)
  • Transports Publics du Chablais (TPC)
  • Wilhelm Tell Express (WTE)
  • Zentralbahn (ZB)
• United Kingdom (at March 2024)
  • Arriva Rail London
  • Avanti West Coast
  • Caledonian Sleeper
  • Chiltern Railways
  • Colas Rail
  • CrossCountry
  • DB Cargo UK
  • DCRail
  • Direct Rail Services
  • East Midlands Railway
  • Elizabeth line
  • Freightliner
  • GB Railfreight
  • Govia Thameslink Railway
  • Grand Central
  • Greater Anglia
  • Great Western Railway
  • Heathrow Express
  • Hull Trains
  • Locomotive Services Limited
  • London North Eastern Railway
  • Lumo
  • Merseyrail
  • Translink (Northern Ireland)
  • Northern Trains
  • Rail Operations Group
  • Riviera Trains
  • ScotRail
  • Southeastern
  • South Western Railway
  • TransPennine Express
  • Transport for Wales
  • Vintage Trains
  • West Coast Railways
  • West Midlands Trains

Regional passenger and cargo railways

• Hungary
  • CER Vasúti Zrt
  • Magyar Magánvasút ZRt. (MMV)
  • Mátrai Erőmű Zrt.
  • MÁV-Hajdú Vasútépítő Kft.
  • Train Hungary Magánvasút Kft
• Poland
  • Connex Polska sp. z o.o
  • KOLEJ NZGTK
  • KP Szczakowa S.A.
  • KP Kotlarnia S.A.
  • KP Kuźnica Warężyńska S.A.
  • PKN Orlen
  • Przedsiębiorstwo Transportu Kolejowego i Gospodarki Kamieniem S.A. w Rybniku (PTK)
  • Przedsiębiorstwo Transportu Kolejowego i Gospodarki Kamieniem Holding SA Zabrze (PTK)
• Romania
  • Transferoviar Grup

Urban, municipal and local railways

• Armenia
  • Yerevan metro
• Austria
  • Insbrucker Verkehrsbetriebe (IVB)
  • Linzer Lokalbahn (LLB)
  • Wiener Lokalbahnen AG (WLB)
• Germany
  • Karlsruher Verkehrsverbund (KVB)
• Hungary
  • Budapesti Helyiérdekű Vasút (BHÉV)
• Italy
  • Ferrovia Roma Ostia Lido
  • Ferrovia Roma Viterbo
• Poland
  • PKP SKM sp. z o.o
  • PKP WKD sp. z o.o
• Spain
  • Metro de Madrid
  • Metro de Barcelona
  • Metro de Granada
  • Metro de Málaga
  • Metro de Santander
  • Metro de Sevilla

Cargo railways

• Austria
  • Rail Cargo Austria
  • Logistik- und Transport GmbH (LTE)
• Germany, Netherlands, Denmark, Switzerland, Italy
  • Railion
• Germany, France, Luxembourg and Switzerland
  • Rhealys
• Germany, Netherlands
  • Bentheimer Eisenbahn
• Slovakia
  • Železnična spoločnost' Cargo Slovakia (ZSCS)
• Slovenia
  • Adria Transport
• Hungary
  • MÁV Cargo
• Italy
  • FS Cargo
  • Rail Traction Company
• Norway
  • CargoNet
• Poland
  • PKP CARGO SA
  • PKP LHS sp. z o.o.
  • Przedsiębiorstwo Transportu Kolejowego
• Romania
  • CFR Marfa
  • Grup Feroviar Român
  • GP Rail Cargo
  • Transferoviar Grup
  • Vest Trans Rail
  • Via Terra Spedition
  • Cargo Trans Vagon
  • Constantin Grup
  • DB Cargo Romania
  • Rail Cargo Carrier- România
  • Tehnotrans Feroviar
  • CER-Fersped/EP Rail
  • Unicom Tranzit
  • Tim Rail Cargo
  • LTE-Rail Romania
  • PSP Cargo Group- Romania
  • Express Forwarding
  • Rofersped
• Sweden
  • Green Cargo

Infrastructural and track railways

• Austria
  • ÖBB-Infrastruktur Betrieb AG
• Bulgaria
  • Национална компания Железопътна инфраструктура
• Czech Republic
  • Správa železnic (SŽ)
• France
  • SNCF réseau
• Slovakia
  • Železnice Slovenskej republiky (ŽSR)
• Poland
  • PKP Polskie Linie Kolejowe SA
• Romania
  • CFR SA
• Sweden
  • Banverket