Lieutenant Roger Bolton Hay MC was a World War I flying ace credited with five aerial victories. Hay was one of the founding members of 48 Squadron, which was the first to be equipped with Bristol F.2 Fighters. He began his victory string during Bloody April, 1917, with wins on 23, 24, and 27 April. The first two victories are shared with fellow aces Fred Holliday, Anthony Wall, Ernest Moore, and William Winkler. The third is also shared, with Maurice Benjamin and William Price. He scored twice more, on 15 June and 12 July 1917. His final total was two destroyed and three driven down out of control.