Judith Green (born 1947) is an English medieval historian, who is Emerita Professor of Medieval History at the University of Edinburgh. A graduate of King's College, London and Somerville College, Oxford, she held a research fellowship and then a lectureship at the University of St Andrews before transferring to a lectureship at Queen's University, Belfast. There she became a Reader and, eventually, Professor. In 2005, she took the professorship at Edinburgh, retiring in 2011.

Specialising in Anglo-Norman England, her notable works include:

• The Government of England Under Henry I, (Cambridge, 1986)
• The Aristocracy of Norman England, (Cambridge, 1997)
• Henry I, King of England and Duke of Normandy, (Cambridge, 2006)
• Forging the Kingdom: Power in English Society 973-1189. Cambridge, UK: Cambridge University Press. 2017. ISBN 978-0-521-15829-9.
• The Normans: Power, Conquest and Culture in 11th century Europe (New Haven, 2022)