Sir Keith Macpherson Smith and Sir Ross Macpherson Smith
- Born: December 20, 1890, Adelaide, South Australia
- Died: December 19, 1955, Sydney, New South Wales
- Born: December 4, 1892, Adelaide, South Australia
- Died: April 13, 1922, Brooklands, near Walton and Weybridge, Surrey, England
Sir Keith Macpherson Smith and Sir Ross Macpherson Smith were brothers and Australian aviators who made the first flight from England to Australia.
During World War I, Keith Macpherson Smith flew as a pilot in the Royal Air Force (1917β19), while Ross Macpherson Smith started with the Australian Light Horse in Turkey at Gallipoli and Sinai until he learned to fly in Egypt in 1916. He spent the last two years of the war in the Australian Flying Corps in Palestine. Ross Macpherson Smith made the first flight from Cairo to Calcutta, in 1918.
On their record flight to Australia, the brothers took off from England on November 12, 1919, in a Vickers Vimy twin-engine biplane accompanied by two sergeants, J. M. Bennett and W. H. Shiers, as mechanics. They landed at Darwin, Northern Territory, on December 10. Afterward, the brothers were knighted and received a Β£10,000 prize.
In 1922 they began preparations for a pioneer round-the-world flight in a Vickers pusher-amphibian aircraft, but Ross Macpherson Smith was killed, together with Bennett, while testing the aircraft at Brooklands, and Keith Macpherson Smith abandoned the project. Later, he went into business in Sydney.