Brigadier Alan Robert Barker DSO OBE MC (29 October 1898 – August 1984) was a senior British Indian Army officer of the Second World War. On 27 October 1916 Barker was commissioned into the Indian Army on the unattached list, and between January and August 1917 he served with the Royal Flying Corps in France. He was promoted to lieutenant on 27 October 1917, and received a commission in the 7th Duke of Edinburgh's Own Gurkha Rifles. Barker then joined the 124th Duchess of Connaught's Own Baluchistan Infantry serving in India. In 1919 he was awarded the Military Cross for his actions in the Third Anglo-Afghan War. Between 1937 and 1940 he was Brigade Major of the Peshawar Brigade, and he was promoted to lieutenant-colonel in 1942.