Comboios de Portugal

CP — Comboios de Portugal, EPE (CP; English: Trains of Portugal) is a state-owned company which operates passenger trains in Portugal. Prior to June 2009, CP stood for Caminhos de Ferro Portugueses (English: Portuguese Railways) although the company has been using its current designation as a brand name since 2004.

CP can trace its origins back to October 1856 and the opening of the first railway line in Portugal; the majority of the network has long comprised Iberian gauge lines, compatible with neighboring Spain. During the 1950s, the Portuguese railway network spanned roughly 3,750 km (2,330 mi), its greatest extent. In 1975, the Portuguese Railway Company was nationalised Amid a decline in passenger numbers, various lines were shut down, with almost a quarter of the rail network being closed by the twenty-first century.

During the 1990s, various efforts to restructure and improve CP services have been initiated. During 1999, CP introduced its new flagship service, the Alfa Pendular, which operates between Braga - Porto - Lisbon - Faro using tilting trains. Since 2005, management of the railway infrastructure has been split from CP, which instead focuses on train services, while the former role is now performed by Infraestruturas de Portugal (IP). Also, CP's cargo activities were transferred to private company MSC who operate them under the Medway label; leaving CP to only operate passenger trains. In 2015, a new long-term strategy for Portugal's railway network has been underway, under which full electrification of the network, the provision of European Rail Traffic Management System (ERTMS), and the general modernisation and improvement of trunk routes and international services is being conducted. Throughout early 2023, CP's operations have been repeatedly disrupted by industrial action.