Roy Cecil Phillipps MC & Bar, DFC (1 March 1892 – 21 May 1941) was an Australian fighter ace of World War I. Born in New South Wales but raised in Western Australia, he commenced service as an infantryman with the Australian Imperial Force in April 1915, seeing action at Gallipoli and on the Western Front. Wounded twice in 1916, he transferred to the Australian Flying Corps (AFC) and, having falsified his age, was accepted for pilot training in May 1917. As a member of No. 2 Squadron in France, Phillips achieved fifteen aerial victories and was awarded the Military Cross and Bar and the Distinguished Flying Cross. He finished the war a major, commanding No. 6 (Training) Squadron in England. After leaving the AFC in 1919, he became a farmer before enlisting in the Royal Australian Air Force