Ronald Ewart Oakeshott (25 May 1916 – 30 September 2002) 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.