tudsvik is a supplier of nuclear analysis software and specialised services to the international nuclear industry. The company is headquartered in Nyköping, Sweden, and has five divisions: Sweden, United Kingdom, Germany, the United States, and Global Services. There are 1,100 employees in 8 countries.

Studsvik offers advanced technical services to the international nuclear power industry in areas including fuel analysis software, waste treatment, decommissioning, engineering and services, and operating efficiency.