|Olympic medal record|
|1908 London||Team competition|
Percy Philip O'Reilly (27 July 1870 – 2 July 1942) was an Irish polo player who competed at the 1908 Summer Olympics. Together with John Paul McCann, John Hardress Lloyd and Auston Rotheram, he was a member of the Ireland team that won a silver medal. The Ireland team was part of the Great Britain Olympic team.
His daughter Viola married General Sir Miles Dempsey.