Major-General Sir Arthur Edward Augustus Ellis, GCVO, CSI (13 December 1837 – 11 June 1907) was a British Army officer and courtier in the Household of King Edward VII and Queen Alexandra.
Ellis was the son of Hon. Augustus Frederick Ellis, the son of Charles Ellis, 1st Baron Seaford, and Mary Frances Thurlow Cunynghame. He was educated at the Royal Military College, Sandhurst and commissioned into the 21st Regiment of Foot on 11 August 1854. Ellis fought in the Crimean War between 1854 and 1856. He soon transferred to the 33rd Regiment of Foot and was promoted to captain on 17 April 1860. On 22 April 1862 Ellis transferred from the 33rd Foot to the Grenadier Guards.
In 1876, Ellis became an equerry to the Prince of Wales and was invested as a Companion of the Order of the Star of India. He was Sergeant at Arms in the House of Lords from 1898 to 1901. He served as an Extra Equerry and as Comptroller of Accounts in the household of Edward VII between 1901 and his death in 1907. After successfully taking part in the arrangements for King Edward′s coronation, he was invested as a Knight Grand Cross of the Royal Victorian Order (GCVO) two days after the ceremony, on 11 August 1902.