Captain Gordon Fox Rule (or Fox-Rule) DFC (16 August 1898 – 10 June 1987) was an English Brazilian First World War flying ace credited with seven aerial victories.

[5] His squadron was initially equipped with the Airco DH.4 light bomber, in which he gained his first two victories, driving down German reconnaissance aircraft in early March 1918.

[8] On 20 September 1918 his award of the Distinguished Flying Cross was gazetted, his citation reading: He also received the Croix de guerre with palm from France in 1918.

[16][17] Fox Rule was also a leading member of the São Paulo Athletic Club, helping introduce Rugby Union to Brazil, with the first recorded match taking place in 1926.

[18] In 1984 Fox Rule donated his collection of mementos, photographs and documents covering his military career to the Imperial War Museum in London.