Sir Gavin Alexander Williamson is a British politician who most recently served as Minister of State without Portfolio from 25 October to 8 November 2022. He has been the Member of Parliament (MP) for South Staffordshire since 2010. A member of the Conservative Party, Williamson previously served in Theresa May's Cabinet as Government Chief Whip from 2016 to 2017, Secretary of State for Defence from 2017 to 2019, and as Secretary of State for Education under Boris Johnson from 2019 to 2021.

The office of Minister of State without Portfolio, sometimes previously known as constitution minister, is a ministerial role in the Government of the United Kingdom. The officeholder currently supports the office of Chancellor of the Duchy of Lancaster with public appointments and government communications. The post is currently held by Esther McVey since November 2023.