Percival Spencer (11 November 1864, Islington, London, England – 11 April 1913, Highbury, London) was a British pioneering balloonist and parachutist.Spencer was part of the third generation of a family of professional balloonists. He was the eldest son of Charles Green Spencer (1837–1880), who was the son of Edward Spencer (1799–1849). Edward Spencer, a solicitor, was a friend and trusted assistant of the noted balloonist Charles Green, ascending with Green 27 times and soloing 40 times.