Berkeley George Andrew Moynihan, 1st Baron Moynihan, KCMG, CB (2 October 1865 – 7 September 1936), known as Sir Berkeley Moynihan 1st Baronet, from 1922 to 1929, was a noted British abdominal surgeon.Moynihan was born in Malta, the son of the Victoria Cross recipient Andrew Moynihan, and moved with his mother to Leeds, Yorkshire. He was educated in Leeds and the Blue Coat School, Newgate Street, London (1875–1881). After two years at the Royal Naval School, Eltham, he returned to Leeds to study medicine at the Leeds School of Medicine. He graduated MB at the University of London in 1887 and joined Leeds General Infirmary as house surgeon. He was then successively demonstrator of anatomy in the Medical School (1893–96), assistant surgeon to the infirmary (1896), surgeon from 1906 and consulting surgeon from 1927 until his death. He was lecturer in surgery from 1896–1909, and from 1909–1927 professor of clinical surgery at the University of Leeds.By the end of the Great War Moynihan held the rank of major-general in the British Army and had been chairman of the Army Advisory Board from 1916 and chairman of the council of consultants 1916 to 1919.He delivered the Bradshaw Lecture in 1920 and the Hunterian oration in 1927. He served as President of the Royal College of Surgeons of England from 1926 to 1932. Moynihan was knighted in 1912, appointed a Companion of the Order of the Bath in 1917, a Knight Commander of the Order of St Michael & St George in 1918 and created a Baronet of Carr Manor in 1922. On 19 March 1929 he was raised to the peerage as Baron Moynihan, of Leeds in the County of York. Lord Moynihan was succeeded in his title by his son Patrick Berkeley Moynihan.In 1935, a year before his death, Moynihan and Dr Killick Millard had founded the British Voluntary Euthanasia Society.