Poznańskie Zakłady Naprawcze Taboru Kolejowego

Poznańskie Zakłady Naprawcze Taboru Kolejowego (abbreviated ZNTK Poznań, English: Poznań Rail Rolling Stock Repair Workshops) is a company in Poznań engaged in the production, modernization, and repair of railway vehicles and their components, as well as providing other services in the railway industry. Its origins date back to 1870, when the first of three railway workshops was established, which were merged into a single facility in the late 1880s and early 1890s. During the Polish People's Republic, it operated as a state-owned enterprise, the Rail Rolling Stock Repair Workshops in Poznań. In 1995, it was transformed into a joint-stock company, and in 2005, it was acquired by the Sigma company. Since 2018, it has been in bankruptcy.