Sir Alan Stewart Orr, OBE (21 February 1911 – 3 April 1991) was a British barrister specialising in taxation who rose to be a High Court judge and a Lord Justice of Appeal.

During the Second World War, Orr served in the Royal Air Force Volunteer Reserve, became a wing commander, and was appointed an Officer of the Order of the British Empire for his wartime service.

[9] In the 1944 King's Birthday Honours, Acting Wing Commander Orr was appointed Officer of the Order of the British Empire (OBE).

[12] On 21 February 1956, having spent a number of years in the inactive reserves, he relinquished his commission and was allowed to retain the rank of wing commander.

Well known as a "tax devil", Orr was raised to Queen's Counsel in 1958,[3] and the same year was appointed as Recorder of New Windsor, a part-time judicial role.

[19] In 1965 Orr was appointed as a High Court judge, joining the Probate, Divorce, and Admiralty Division, which was unusual, as he had only rarely appeared in it as a counsel.

When he died in 1991, The Times said in its obituary: "Alan Orr was a quiet unassuming judge of exceptional quality.

[25] In October 1966, the spy George Blake escaped from HM Prison Wormwood Scrubs and fled from Great Britain to the Soviet Union, and a month later his wife, with whom he had three children, began divorce proceedings against him.

[26] On 17 December 1968, Orr granted the actress Britt Ekland a decree nisi for divorce on the grounds of cruelty by Peter Sellers, who did not contest the proceedings.

[27] In 1933, Orr married Mariana Frances Lilian, a daughter of Captain J. C. Lang, King's Own Scottish Borderers.