Patrick Young Alexander (28 March 1867 – 7 July 1943) was a British aeronautical pioneer fascinated by the possibility of heavier-than-air flight. He was an enthusiastic balloonist and he was also particularly active in meteorology. He performed many meteorological and aviation experiments, designing and building his own equipment. He travelled widely, visiting Australia in his youth and later making many visits to USA – crossing the Atlantic at least 50 times – he travelled widely in Europe and visited Mexico, Russia, Siberia and Africa in pursuit of his interests.