Portsmouth Football Club is a professional association football club based in Portsmouth, England which was originally founded in 1898. Football was first played in Portsmouth from at least the middle of the nineteenth century, having been brought to the Victorian era military town of Portsmouth by soldiers, sailors and dockers who had come from other towns and cities in England, particularly from the north of England where the game and rules of association football were already well established. A series of part-time amateur teams and clubs were formed in Portsmouth during the latter half on the nineteenth century as football became more popular and widespread, but none were as successful as the professional Portsmouth F.C., which continues to the present day.

Fratton Park is a football ground in Portsmouth, Portsea Island, England and is the home of Portsmouth F.C. Fratton Park's location on Portsea Island is unique in English professional football, as it is the only professional English football ground not located on the mainland of Great Britain. Fratton Park has been the only home football ground in Portsmouth FC's entire history.