Chief Scientific Adviser
Chief Scientific Adviser may refer to:
- Chief Science Advisor (Canada)
 - Chief Scientific Adviser to the Ministry of Defence, United Kingdom
 - Government Chief Scientific Adviser (United Kingdom)
 - Office of the Chief Scientist (Australia)
 - Government Chief Scientific Adviser (Ireland)
 - Principal Scientific Adviser to the Government of India
 - Science Advisor to the President, of the United States
 - Scientific Advice Mechanism ยง Group of Chief Scientific Advisors, for the European Commission