Sarah Anne Munby is a British civil servant who has served as the Permanent Secretary of the Department for Science, Innovation and Technology since February 2023. She was previously the Permanent Secretary of the Department for Business, Energy and Industrial Strategy from July 2020 to February 2023.

The Department for Science, Innovation and Technology (DSIT) is a ministerial department of the Government of the United Kingdom. It was established on 7 February 2023 by a cabinet reshuffle under the Rishi Sunak premiership.