Kudelski SA is a Swiss company that sells digital television access and management systems, content protection solutions, cybersecurity solutions, Internet of Things products and public access infrastructure. The company is headquartered in Cheseaux-sur-Lausanne and Phoenix, Arizona. Kudelski's first successful product was the Nagra tape recorder, developed by founder and Polish-born researcher Stefan Kudelski.

Cheseaux-sur-Lausanne is a municipality in the district of Lausanne in the canton of Vaud in Switzerland.