Michael John Barthorp (died 5 January 2018, aged 90 years) was a British historian and writer, specialising in military history and military uniforms. He lived in Jersey, Channel Islands. Barthorp attended Wellington College until the end of the Second World War. In September 1945, he joined the Rifle Brigade under universal conscription and was demobilised in 1958. After some time with the Royal Hampshire Territorials, he exchanged for a regular commission in the Northamptonshire Regiment in which his family had served for three generations.