Třinec Iron and Steel Works
| Native name | Třinecké železárny, a. s. | 
|---|---|
| Company type | Joint-stock company | 
| Industry | Steel industry | 
| Founder | Třinecká komora | 
| Headquarters | 49°41′25″N 18°39′10″E / 49.69028°N 18.65278°E, , | 
| Products | Steel | 
| Revenue | 1,574,000,000 euro (2018) | 
| 129,600,000 euro (2018) | |
| Number of employees | 7,126 (2018) | 
| Website | trz | 
Třinec Iron and Steel Works (TŽ) (Czech: Třinecké železárny, Polish: Huta trzyniecka) is a producer of long rolled steel products in Třinec, Moravian-Silesian Region, Czech Republic. TŽ produces over a third of all steel produced in the Czech Republic (roughly 2.5 million tons annually). Since its establishment, Třinecké železárny's plants have produced more than 150 million tons of crude steel. Moravia Steel is the major shareholder of TŽ, the biggest Czech steel company controlled by domestic capital.