Walter Arthur Charles Dicketts (31 March 1900 – 16 August 1957) was a British double agent who was sent by MI5 into Nazi Germany in early 1941 to infiltrate the Abwehr and bring back information about any impending invasion of Britain. Before his 2 years as a double agent, he was an RNAS officer who had worked in Air Intelligence during the latter part of World War I and had served several prison sentences for fraud. As he was unable to regain a commission in the RAF or work for British Intelligence due to his criminal past, Dicketts volunteered to work for the British Double Cross team.