Hilary Ann Priestley is a British mathematician. She is a professor at the University of Oxford and a Fellow of St Anne's College, Oxford, where she has been Tutor in Mathematics since 1972.^[2]

Hilary Priestley introduced ordered separable topological spaces; such topological spaces are now usually called Priestley spaces in her honour.^[3] The term "Priestley duality" is also used for her application of these spaces in the representation theory of distributive lattices.^[4]

• Priestley, Hilary A. (2003). Introduction to Complex Analysis (2nd ed.). Oxford University Press. ISBN 978-0-19-852562-2.
• Davey, Brian A.; Priestley, Hilary A. (2002). Introduction to Lattices and Order (2nd ed.). Cambridge University Press. ISBN 9780521784511.^[5]
• Priestley, Hilary A. (1997). Introduction to Integration. Oxford University Press. ISBN 978-0-19-850123-7.