CadillacUnited States
Canadian Car and FoundryCanada
Canadian General ElectricCanada
CanooUnited States
CaproniItalyCarminati & ToselliItaly
Carrosserie HessSwitzerland
CasaraltaItaly
Changan AutomobilePeople's Republic of China
Changan MazdaJapan
Chernihivskyi Avtobusnyi ZavodUkraine
ChevroletUnited StatesChittaranjan Locomotive WorksIndiaChristoph & UnmackGerman ReichChullora Railway WorkshopsAustralia
CitroënFrance
City TransformerIsrael
Clayton Equipment CompanyUnited Kingdom
Clyde EngineeringAustralia
Coda AutomotiveUnited States
Commonwealth EngineeringAustralia
Compagnia Generale di ElettricitàItalyCompagnie générale d'électricitéFranceCompagnie Électro-MécaniqueFrance
Construcciones y Auxiliar de FerrocarrilesSpainCostruzioni Meccaniche di SaronnoItalyCreusot-LoireFranceCrewe WorksUnited KingdomCROTRAMZagreb
CRRCPeople's Republic of China
CRRC Beijing Locomotive Co., Ltd.People's Republic of China
CRRC Dalian Co., Ltd.People's Republic of China
CRRC Datong Co., Ltd.People's Republic of China
CRRC Qishuyan Co., Ltd.People's Republic of ChinaCRRC Taiyuan Co.,Ltd.People's Republic of China
CRRC Zhuzhou Locomotive Co., Ltd.People's Republic of ChinaCRRC Ziyang Co., Ltd.People's Republic of China
CSR Corporation Limited2007
CupraSpain
CZ LOKOCzech Republic
ČD CargoCzech Republic
ČKDCzech Republic
ČKD TatraCzech Republic