Neil John O'Brien is a British Conservative Party politician who has been the Member of Parliament (MP) for Harborough, Oadby and Wigston, previously Harborough, since 2017. He was the Parliamentary Under-Secretary of State for Primary Care and Public Health from September 2022 to November 2023. He was previously a special adviser to Chancellor of the Exchequer George Osborne from 2012 to 2016 and Theresa May during her tenure as Prime Minister.