Thyssen AG was a prominent German industrial company founded in 1891, primarily known for its steel production and manufacturing. It played a significant role in the development of the German steel industry and was involved in various sectors, including construction and engineering. The company was part of the larger ThyssenKrupp AG after a merger in 1999, which combined Thyssen AG with Friedrich Krupp AG. Throughout its history, Thyssen AG contributed to major infrastructure projects and innovations in steel technology. The company was recognized for its commitment to quality and efficiency, helping to shape the industrial landscape in Germany and beyond.