Diehl Group is a globally active German technology enterprise headquartered in Nürnberg, Germany. A long-established, family-owned company, it operates across multiple industrial sectors through five corporate divisions: Diehl Metall, Diehl Controls, Diehl Defence, Diehl Aviation and Diehl Metering. With around 19,500 employees worldwide and annual sales of 5.4 billion euros in 2025, Diehl combines a broad product portfolio with an international network of approximately 100 locations.

Its offerings include metal-processing products and technologies; electronic systems for home appliances, heat pumps and heating, ventilation, air-conditioning and refrigeration applications; defence and security solutions for armed forces; and avionics and cabin integration for the aviation industry. Diehl Metering supplies utilities with smart metering solutions, connecting devices to data platforms using its communications expertise and radio technology. The group also provides shared IT services through Diehl Informatik and invests in promising start-ups and sustainable partnerships through Diehl Ventures. Across its divisions, Diehl develops and delivers technologies, systems and services for customers around the world.