Ronald Ewart Oakeshott was a British illustrator, collector, and amateur historian who wrote prodigiously on medieval arms and armour. He was a Fellow of the Society of Antiquaries, a Founder Member of the Arms and Armour Society, and the Founder of the Oakeshott Institute. He created a classification system of the medieval sword, the Oakeshott typology, a systematic organization of medieval weaponry.

The Oakeshott typology is a way to define and catalogue the medieval sword based on physical form. It categorises the swords of the European Middle Ages into 13 main types, labelled X through XXII. The historian and illustrator Ewart Oakeshott introduced it in his 1960 treatise The Archaeology of Weapons: Arms and Armour from Prehistory to the Age of Chivalry.