The Hon. Dr Jane Diane Lomax-Smith, AM (born 19 June 1950 in the United Kingdom) is an Australian politician and histopathologist (morbid anatomist). She was in Local Government for 9 years, as a councillor for three terms and Lord Mayor of Adelaide for two terms. She was elected to the South Australian House of Assembly seat of Adelaide representing the Labor Party from 2002 to 2010, and throughout this time was a Minister of Education and Tourism and a range of other portfolios. In 2010-2011 she was the Interim Director of the Royal Institution of Australia (RiAus). Since 2011 she has been the chair of the Board of the South Australian Museum.
Lomax-Smith was born in Walthamstow in the East End of London, in the United Kingdom. She attended the Woodford County High School Grammar School, and received a grant to attend the London Hospital Medical College, in Whitechapel, where she obtained her medical degree (BSc MBBS) and BSc(Hons). After migrating to Australia, she was made FRCPA (Fellow Royal College of Pathologists of Australasia) in 1984 and received a Ph.D. from the University of Adelaide in 1985 on "IgA Nephropathy and Liver Disease”. Before entering politics she was a clinical pathologist, medical researcher and teacher.