Ursula Hilda Mary Martin CBE FRSE FREng (born 3 August 1953) is a British computer scientist, with research interests in theoretical computer science and formal methods. She is also known for her activities aimed at encouraging women in the fields of computing and mathematics. Since 2019, she has been a professor at the School of Informatics, University of Edinburgh. From 2014–2018, Martin was a Professor of Computer Science in the Department of Computer Science at the University of Oxford, and holds an EPSRC Established Career Fellowship. Prior to this she held a chair of Computer Science in the School of Electronic Engineering and Computer Science at Queen Mary, University of London, where she was Vice-Principal of Science and Engineering, 2005–2009.