Philip Astley (8 January 1742 – 27 January 1814) was an English equestrian, circus owner, and inventor, regarded as being the "father of the modern circus". The circus industry, as a presenter of an integrated entertainment experience that includes music, domesticated animals, acrobats, and clowns, traces its heritage to Astley's Amphitheatre, a riding school that Astley founded in London following the success of his invention of the circus ring in 1768.
Philip Astley was born in Newcastle-under-Lyme in England the son of a cabinetmaker. At the age of nine, he apprenticed with his father, but Astley's dream was to work with horses, so he joined Colonel Eliott's Fifteenth Light Dragoons when he was 17, later becoming a Sergeant Major. His service in the Seven Years' War brought him into contact with professional trainers and riders. Astley himself was a brilliant rider.
Astley had a genius for trick riding. He saw that trick riders received more attention from the crowds in Islington. He had an idea for opening a riding school in London in which he could also conduct shows of acrobatic riding skill. In 1768, Astley performed in an open field at what is now the Waterloo area of London, behind the present site of St John's Church. He rode in a circle rather than a straight line as his rivals did, and thus chanced on the format which was later named a 'circus'. This format was so successful that Astley added a clown to his shows to amuse the spectators between equestrian sequences, and later moved to fenced premises just south of Westminster Bridge, where he opened his riding school from 1770 onwards and expanded the content of his shows (see below). He taught riding in the mornings and performed his "feats of horsemanship" in the afternoons.