Gillian Joanna Merron, Baroness Merron (born 12 April 1959) is a British politician and life peer serving as Chief Executive of the Board of Deputies of British Jews since 2014. A member of the Labour Party, she has been serving as the Parliamentary Under-Secretary of State for Patient Safety, Women's Health and Mental Health since 2024. She served as the shadow spokesperson for Health and Social Care from 2021 to 2024. She was previously Member of Parliament (MP) for Lincoln from 1997 till 2010 and held several ministerial offices in the Blair and Brown governments.